diff --git a/core/src/main/java/org/jruby/RubyArray.java b/core/src/main/java/org/jruby/RubyArray.java
index b991f3b5554..c9337edf2b2 100644
--- a/core/src/main/java/org/jruby/RubyArray.java
+++ b/core/src/main/java/org/jruby/RubyArray.java
@@ -2078,11 +2078,6 @@ private void recursiveJoin(final ThreadContext context, final IRubyObject outVal
         context.safeRecurse(JOIN_RECURSIVE, new JoinRecursive.State(ary, outValue, sep, result, first), outValue, "join", true);
     }
 
-    @Deprecated
-    public IRubyObject join19(final ThreadContext context, IRubyObject sep) {
-        return join(context, sep);
-    }
-
     /** rb_ary_join
      *
      */
@@ -2124,11 +2119,6 @@ public IRubyObject join(final ThreadContext context, IRubyObject sep) {
         return result;
     }
 
-    @Deprecated
-    public IRubyObject join19(ThreadContext context) {
-        return join(context);
-    }
-
     @JRubyMethod(name = "join")
     public IRubyObject join(ThreadContext context) {
         return join(context, getDefaultSeparator(context.runtime));
diff --git a/core/src/main/java/org/jruby/RubyDir.java b/core/src/main/java/org/jruby/RubyDir.java
index acb0ece3c56..2d521d56544 100644
--- a/core/src/main/java/org/jruby/RubyDir.java
+++ b/core/src/main/java/org/jruby/RubyDir.java
@@ -486,11 +486,6 @@ public static RubyArray children(ThreadContext context, IRubyObject recv, IRubyO
         return dir.children(context);
     }
 
-    @Deprecated
-    public static IRubyObject rmdir19(IRubyObject recv, IRubyObject path) {
-        return rmdir(recv.getRuntime().getCurrentContext(), recv, path);
-    }
-
     /**
      * Deletes the directory specified by <code>path</code>.  The directory must be empty.
      */
diff --git a/core/src/main/java/org/jruby/RubyFile.java b/core/src/main/java/org/jruby/RubyFile.java
index 5c6b62a5cbb..f09b5e552e2 100644
--- a/core/src/main/java/org/jruby/RubyFile.java
+++ b/core/src/main/java/org/jruby/RubyFile.java
@@ -1270,11 +1270,6 @@ public static IRubyObject readlink(ThreadContext context, IRubyObject recv, IRub
         }
     }
 
-    @Deprecated
-    public static IRubyObject truncate19(ThreadContext context, IRubyObject recv, IRubyObject arg1, IRubyObject arg2) {
-        return truncate(context, recv, arg1, arg2);
-    }
-
     // Can we produce IOError which bypasses a close?
     @JRubyMethod(name = "truncate", meta = true)
     public static IRubyObject truncate(ThreadContext context, IRubyObject recv, IRubyObject arg1, IRubyObject arg2) {
diff --git a/core/src/main/java/org/jruby/RubyFileStat.java b/core/src/main/java/org/jruby/RubyFileStat.java
index 11995b63ea5..e230b200ccd 100644
--- a/core/src/main/java/org/jruby/RubyFileStat.java
+++ b/core/src/main/java/org/jruby/RubyFileStat.java
@@ -142,11 +142,6 @@ private void setup(String filename, boolean lstat) {
         }
     }
 
-    @Deprecated
-    public IRubyObject initialize19(IRubyObject fname, Block unusedBlock) {
-        return initialize(fname, unusedBlock);
-    }
-
     @JRubyMethod(name = "initialize", visibility = Visibility.PRIVATE)
     public IRubyObject initialize(IRubyObject fname, Block unusedBlock) {
         Ruby runtime = getRuntime();
diff --git a/core/src/main/java/org/jruby/RubyMatchData.java b/core/src/main/java/org/jruby/RubyMatchData.java
index 146de383bf4..5d836939594 100644
--- a/core/src/main/java/org/jruby/RubyMatchData.java
+++ b/core/src/main/java/org/jruby/RubyMatchData.java
@@ -673,11 +673,6 @@ public IRubyObject end(ThreadContext context, IRubyObject index) {
         return RubyFixnum.newFixnum(runtime, e);
     }
 
-    @Deprecated
-    public IRubyObject offset19(ThreadContext context, IRubyObject index) {
-        return offset(context, index);
-    }
-
     /** match_offset
      *
      */
diff --git a/core/src/main/java/org/jruby/RubyMath.java b/core/src/main/java/org/jruby/RubyMath.java
index 7f6dd6c5757..b3602ebbbe2 100644
--- a/core/src/main/java/org/jruby/RubyMath.java
+++ b/core/src/main/java/org/jruby/RubyMath.java
@@ -370,11 +370,6 @@ public static RubyFloat cbrt(ThreadContext context, IRubyObject recv, IRubyObjec
         return RubyFloat.newFloat(context.runtime, result);
     }
 
-    @Deprecated
-    public static RubyFloat hypot19(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y) {
-        return hypot(context, recv, x, y);
-    }    
-
     @JRubyMethod(name = "hypot", module = true, visibility = Visibility.PRIVATE)
     public static RubyFloat hypot(ThreadContext context, IRubyObject recv, IRubyObject x, IRubyObject y) {
         double valuea = RubyNumeric.num2dbl(context, x);
diff --git a/core/src/main/java/org/jruby/RubyModule.java b/core/src/main/java/org/jruby/RubyModule.java
index da29117273b..f4df06cdd17 100644
--- a/core/src/main/java/org/jruby/RubyModule.java
+++ b/core/src/main/java/org/jruby/RubyModule.java
@@ -3204,11 +3204,6 @@ protected void addMethodSymbols(Ruby runtime, Set<String> seen, RubyArray ary, b
         });
     }
 
-    @Deprecated
-    public RubyArray instance_methods19(IRubyObject[] args) {
-        return instance_methods(args);
-    }
-
     @JRubyMethod(name = "instance_methods", optional = 1, checkArity = false)
     public RubyArray instance_methods(IRubyObject[] args) {
         Arity.checkArgumentCount(getRuntime(), args, 0, 1);
@@ -3216,11 +3211,6 @@ public RubyArray instance_methods(IRubyObject[] args) {
         return instanceMethods(args, PRIVATE, false, true);
     }
 
-    @Deprecated
-    public RubyArray public_instance_methods19(IRubyObject[] args) {
-        return public_instance_methods(args);
-    }
-
     @JRubyMethod(name = "public_instance_methods", optional = 1, checkArity = false)
     public RubyArray public_instance_methods(IRubyObject[] args) {
         Arity.checkArgumentCount(getRuntime(), args, 0, 1);
@@ -4018,11 +4008,6 @@ public IRubyObject class_variable_defined_p(ThreadContext context, IRubyObject v
         return context.fals;
     }
 
-    @Deprecated
-    public IRubyObject class_variable_get19(IRubyObject name) {
-        return class_variable_get(name);
-    }
-
     /** rb_mod_cvar_get
      *
      */
@@ -4039,11 +4024,6 @@ public IRubyObject class_variable_set(IRubyObject name, IRubyObject value) {
         return setClassVar(validateClassVariable(getRuntime(), name), value);
     }
 
-    @Deprecated
-    public IRubyObject class_variable_set19(IRubyObject name, IRubyObject value) {
-        return class_variable_set(name, value);
-    }
-
     /** rb_mod_remove_cvar
      *
      */
@@ -4052,11 +4032,6 @@ public IRubyObject remove_class_variable(ThreadContext context, IRubyObject name
         return removeClassVariable(validateClassVariable(context.runtime, name));
     }
 
-    @Deprecated
-    public IRubyObject remove_class_variable19(ThreadContext context, IRubyObject name) {
-        return remove_class_variable(context, name);
-    }
-
     @JRubyMethod(name = "class_variables")
     public RubyArray class_variables(ThreadContext context) {
         Ruby runtime = context.runtime;
diff --git a/core/src/main/java/org/jruby/RubyProcess.java b/core/src/main/java/org/jruby/RubyProcess.java
index 11e04aa6527..46254f0ba14 100644
--- a/core/src/main/java/org/jruby/RubyProcess.java
+++ b/core/src/main/java/org/jruby/RubyProcess.java
@@ -1819,11 +1819,6 @@ public static IRubyObject _fork(ThreadContext context, IRubyObject recv, Block b
         throw context.runtime.newNotImplementedError("fork is not available on this platform");
     }
 
-    @Deprecated
-    public static IRubyObject fork19(ThreadContext context, IRubyObject recv, Block block) {
-        return fork(context, recv, block);
-    }
-
     @JRubyMethod(name = "fork", module = true, visibility = PRIVATE, notImplemented = true)
     public static IRubyObject fork(ThreadContext context, IRubyObject recv, Block block) {
         return RubyKernel.fork(context, recv, block);
diff --git a/core/src/main/java/org/jruby/RubyString.java b/core/src/main/java/org/jruby/RubyString.java
index b2a81b38583..d9a85cf39eb 100644
--- a/core/src/main/java/org/jruby/RubyString.java
+++ b/core/src/main/java/org/jruby/RubyString.java
@@ -341,11 +341,6 @@ public final boolean eql(IRubyObject other) {
         return eqlAndComparable(other);
     }
 
-    @Deprecated
-    private boolean eql19(IRubyObject other) {
-        return eqlAndComparable(other);
-    }
-
     // rb_str_hash_cmp
     private boolean eqlAndComparable(IRubyObject other) {
         final RubyString otherString = (RubyString) other;
@@ -966,11 +961,6 @@ public final void modify() {
         value.invalidate();
     }
 
-    @Deprecated
-    public final void modify19() {
-        modifyAndClearCodeRange();
-    }
-
     public final void modifyAndClearCodeRange() {
         modify();
         clearCodeRange();
@@ -1211,11 +1201,6 @@ public final IRubyObject plus_at() {
         return isFrozen() ? this.dup() : this;
     }
 
-    @Deprecated
-    public IRubyObject op_plus19(ThreadContext context, IRubyObject arg) {
-        return op_plus(context, arg);
-    }
-
     @JRubyMethod(name = "+")
     public IRubyObject op_plus(ThreadContext context, IRubyObject arg) {
         RubyString str = arg.convertToString();
@@ -1229,11 +1214,6 @@ public IRubyObject op_plus(ThreadContext context, IRubyObject arg) {
         return resultStr;
     }
 
-    @Deprecated
-    public IRubyObject op_mul19(ThreadContext context, IRubyObject other) {
-        return op_mul(context, other);
-    }
-
     @JRubyMethod(name = "*")
     public IRubyObject op_mul(ThreadContext context, IRubyObject other) {
         RubyString result = multiplyByteList(context, other);
@@ -1394,13 +1374,6 @@ public final RubyString cat(byte[] str, int beg, int len) {
         return this;
     }
 
-    // Needs to remain in place until StringIO has migrated to the new methods
-    // See https://github.com/ruby/stringio/issues/83
-    @Deprecated
-    public final RubyString cat19(RubyString str2) {
-        return catWithCodeRange(str2);
-    }
-
     // // rb_str_buf_append against VALUE
     public final RubyString catWithCodeRange(RubyString str2) {
         ByteList other = str2.getByteList();
@@ -1416,13 +1389,6 @@ public final RubyString cat(ByteList other, int codeRange) {
         return this;
     }
 
-    // Needs to remain in place until StringIO has migrated to the new methods
-    // See https://github.com/ruby/stringio/issues/83
-    @Deprecated
-    public final int cat19(ByteList other, int codeRange) {
-        return catWithCodeRange(other, codeRange);
-    }
-
     // rb_str_buf_append against ptr
     public final int catWithCodeRange(ByteList other, int codeRange) {
         return EncodingUtils.encCrStrBufCat(metaClass.runtime, this, other, other.getEncoding(), codeRange);
@@ -1488,11 +1454,6 @@ public final RubyString catAscii(byte[] bytes, int ptr, int ptrLen) {
         return this;
     }
 
-    @Deprecated
-    public IRubyObject replace19(IRubyObject other) {
-        return replace(other);
-    }
-
     @JRubyMethod(name = "initialize_copy", visibility = Visibility.PRIVATE)
     @Override
     public RubyString initialize_copy(IRubyObject other) {
@@ -1530,11 +1491,6 @@ public RubyString clear() {
         return this;
     }
 
-    @Deprecated
-    public IRubyObject reverse19(ThreadContext context) {
-        return reverse(context);
-    }
-
     @JRubyMethod(name = "reverse")
     public IRubyObject reverse(ThreadContext context) {
         RubyString str = strDup(context.runtime, context.runtime.getString());
@@ -1542,11 +1498,6 @@ public IRubyObject reverse(ThreadContext context) {
         return str;
     }
 
-    @Deprecated
-    public RubyString reverse_bang19(ThreadContext context) {
-        return reverse_bang(context);
-    }
-
     @JRubyMethod(name = "reverse!")
     public RubyString reverse_bang(ThreadContext context) {
         modifyCheck();
@@ -1710,20 +1661,6 @@ public IRubyObject op_match(ThreadContext context, IRubyObject other) {
         if (other instanceof RubyString) throw context.runtime.newTypeError("type mismatch: String given");
         return sites(context).op_match.call(context, other, other, this);
     }
-    @Deprecated
-    public IRubyObject match19(ThreadContext context, IRubyObject pattern) {
-        return match(context, pattern, Block.NULL_BLOCK);
-    }
-
-    @Deprecated
-    public IRubyObject match19(ThreadContext context, IRubyObject pattern, IRubyObject pos, Block block) {
-        return match(context, pattern, pos, block);
-    }
-
-    @Deprecated
-    public IRubyObject match19(ThreadContext context, IRubyObject[] args, Block block) {
-        return match(context, args, block);
-    }
 
     /**
      * String#match(pattern)
@@ -1768,11 +1705,6 @@ public IRubyObject match_p(ThreadContext context, IRubyObject pattern, IRubyObje
         return getPattern(context.runtime, pattern).matchP(context, this, RubyNumeric.num2int(pos));
     }
 
-    @Deprecated
-    public IRubyObject op_ge19(ThreadContext context, IRubyObject other) {
-        return op_ge(context, other);
-    }
-
     @JRubyMethod(name = ">=")
     public IRubyObject op_ge(ThreadContext context, IRubyObject other) {
         if (other instanceof RubyString && cmpIsBuiltin(context)) {
@@ -1781,11 +1713,6 @@ public IRubyObject op_ge(ThreadContext context, IRubyObject other) {
         return RubyComparable.op_ge(context, this, other);
     }
 
-    @Deprecated
-    public IRubyObject op_gt19(ThreadContext context, IRubyObject other) {
-        return op_gt(context, other);
-    }
-
     @JRubyMethod(name = ">")
     public IRubyObject op_gt(ThreadContext context, IRubyObject other) {
         if (other instanceof RubyString && cmpIsBuiltin(context)) {
@@ -1794,11 +1721,6 @@ public IRubyObject op_gt(ThreadContext context, IRubyObject other) {
         return RubyComparable.op_gt(context, this, other);
     }
 
-    @Deprecated
-    public IRubyObject op_le19(ThreadContext context, IRubyObject other) {
-        return op_le(context, other);
-    }
-
     @JRubyMethod(name = "<=")
     public IRubyObject op_le(ThreadContext context, IRubyObject other) {
         if (other instanceof RubyString && cmpIsBuiltin(context)) {
@@ -1807,11 +1729,6 @@ public IRubyObject op_le(ThreadContext context, IRubyObject other) {
         return RubyComparable.op_le(context, this, other);
     }
 
-    @Deprecated
-    public IRubyObject op_lt19(ThreadContext context, IRubyObject other) {
-        return op_lt(context, other);
-    }
-
     @JRubyMethod(name = "<")
     public IRubyObject op_lt(ThreadContext context, IRubyObject other) {
         if (other instanceof RubyString && cmpIsBuiltin(context)) {
@@ -1824,11 +1741,6 @@ private boolean cmpIsBuiltin(ThreadContext context) {
         return sites(context).cmp.isBuiltin(this);
     }
 
-    @Deprecated
-    public IRubyObject str_eql_p19(ThreadContext context, IRubyObject other) {
-        return str_eql_p(context, other);
-    }
-
     @JRubyMethod(name = "eql?")
     public IRubyObject str_eql_p(ThreadContext context, IRubyObject other) {
         if (other instanceof RubyString) {
@@ -3732,11 +3644,6 @@ private IRubyObject replaceInternal(int beg, int len, RubyString repl) {
         return this;
     }
 
-    @Deprecated
-    private void replaceInternal19(Ruby runtime, int beg, int len, RubyString repl) {
-        strUpdate(runtime, beg, len, this, repl);
-    }
-
     /** rb_str_aref, rb_str_aref_m
      *
      */
@@ -5496,26 +5403,6 @@ public IRubyObject chop_bang(ThreadContext context) {
         return context.nil;
     }
 
-    @Deprecated
-    public RubyString chomp19(ThreadContext context) {
-        return chomp(context);
-    }
-
-    @Deprecated
-    public RubyString chomp19(ThreadContext context, IRubyObject arg0) {
-        return chomp(context, arg0);
-    }
-
-    @Deprecated
-    public IRubyObject chomp_bang19(ThreadContext context) {
-        return chomp_bang(context);
-    }
-
-    @Deprecated
-    public IRubyObject chomp_bang19(ThreadContext context, IRubyObject arg0) {
-        return chomp_bang(context, arg0);
-    }
-
     /**
      * rb_str_chomp_bang
      *
@@ -6021,16 +5908,6 @@ public IRubyObject squeeze_bang(ThreadContext context, IRubyObject[] args) {
         return this;
     }
 
-    @Deprecated
-    public IRubyObject tr19(ThreadContext context, IRubyObject src, IRubyObject repl) {
-        return tr(context, src, repl);
-    }
-
-    @Deprecated
-    public IRubyObject tr_bang19(ThreadContext context, IRubyObject src, IRubyObject repl) {
-        return tr_bang(context, src, repl);
-    }
-
     /** rb_str_tr / rb_str_tr_bang
      *
      */
@@ -6058,16 +5935,6 @@ private IRubyObject trTrans(ThreadContext context, IRubyObject src, IRubyObject
         return (ret == null) ? context.nil : (IRubyObject) ret;
     }
 
-    @Deprecated
-    public IRubyObject tr_s19(ThreadContext context, IRubyObject src, IRubyObject repl) {
-        return tr_s(context, src, repl);
-    }
-
-    @Deprecated
-    public IRubyObject tr_s_bang19(ThreadContext context, IRubyObject src, IRubyObject repl) {
-        return tr_s_bang(context, src, repl);
-    }
-
     /** rb_str_tr_s / rb_str_tr_s_bang
      *
      */
diff --git a/core/src/main/java/org/jruby/ext/zlib/RubyGzipFile.java b/core/src/main/java/org/jruby/ext/zlib/RubyGzipFile.java
index 40114c5f5dd..45f2729c625 100644
--- a/core/src/main/java/org/jruby/ext/zlib/RubyGzipFile.java
+++ b/core/src/main/java/org/jruby/ext/zlib/RubyGzipFile.java
@@ -77,11 +77,6 @@ static IRubyObject wrapBlock(ThreadContext context, RubyGzipFile instance, Block
         }
         return instance;
     }
-
-    @Deprecated
-    public static IRubyObject wrap19(ThreadContext context, IRubyObject recv, IRubyObject io, Block block) {
-        return wrap(context, recv, new IRubyObject[]{io}, block);
-    }
     
     @JRubyMethod(meta = true, name = "wrap", required = 1, optional = 1, checkArity = false)
     public static IRubyObject wrap(ThreadContext context, IRubyObject recv, IRubyObject[] args, Block block) {
diff --git a/core/src/main/java/org/jruby/runtime/builtin/IRubyObject.java b/core/src/main/java/org/jruby/runtime/builtin/IRubyObject.java
index 25ea8a01391..84e8d73fb23 100644
--- a/core/src/main/java/org/jruby/runtime/builtin/IRubyObject.java
+++ b/core/src/main/java/org/jruby/runtime/builtin/IRubyObject.java
@@ -398,14 +398,6 @@ default List<Variable<Object>> getMarshalVariableList() {
     public Object getVariable(int index);
     public void setVariable(int index, Object value);
 
-    /**
-     * @deprecated Use {@link #checkStringType()} instead.
-     */
-    @Deprecated
-    default IRubyObject checkStringType19() {
-        return checkStringType();
-    }
-
     /**
      * @param convertMethod
      * @param convertMethodIndex
diff --git a/core/src/main/java/org/jruby/util/ConvertDouble.java b/core/src/main/java/org/jruby/util/ConvertDouble.java
index cf4756100fb..fe56b1f0af7 100644
--- a/core/src/main/java/org/jruby/util/ConvertDouble.java
+++ b/core/src/main/java/org/jruby/util/ConvertDouble.java
@@ -29,11 +29,6 @@
 package org.jruby.util;
 
 public class ConvertDouble {
-    @Deprecated
-    public static double byteListToDouble19(ByteList bytes, boolean strict) {
-        return byteListToDouble(bytes, strict);
-    }
-
     /**
      * Converts supplied ByteList into a double.  strict-mode will not like
      * extra text non-numeric text or multiple sequention underscores.
diff --git a/core/src/main/java/org/jruby/util/RegexpSupport.java b/core/src/main/java/org/jruby/util/RegexpSupport.java
index 1fa3604ddd9..bd5eb1e8786 100644
--- a/core/src/main/java/org/jruby/util/RegexpSupport.java
+++ b/core/src/main/java/org/jruby/util/RegexpSupport.java
@@ -185,22 +185,12 @@ public static int raisePreprocessError(Ruby runtime, ByteList str, String err, E
         return 0;
     }
 
-    @Deprecated
-    public static void raiseRegexpError19(Ruby runtime, ByteList bytes, Encoding enc, RegexpOptions options, String err) {
-        raiseRegexpError(runtime, bytes, enc, options, err);
-    }
-
     // rb_enc_reg_raise
     public static void raiseRegexpError(Ruby runtime, ByteList bytes, Encoding enc, RegexpOptions options, String err) {
         // TODO: we loose encoding information here, fix it
         throw runtime.newRegexpError(err + ": " + regexpDescription(runtime, bytes, options, enc));
     }
 
-    @Deprecated
-    public static ByteList regexpDescription19(Ruby runtime, ByteList bytes, RegexpOptions options, Encoding enc) {
-        return regexpDescription(runtime, bytes, options, enc);
-    }
-
     // rb_enc_reg_error_desc
     public static ByteList regexpDescription(Ruby runtime, ByteList bytes, RegexpOptions options, Encoding enc) {
         byte[] s = bytes.getUnsafeBytes();
@@ -223,11 +213,6 @@ private static ByteList regexpDescription(Ruby runtime, byte[] s, int start, int
         return description;
     }
 
-    @Deprecated
-    public static void appendRegexpString19(Ruby runtime, ByteList to, byte[] bytes, int start, int len, Encoding enc, Encoding resEnc) {
-        appendRegexpString(runtime, to, bytes, start, len, enc, resEnc);
-    }
-
     public static void appendRegexpString(Ruby runtime, ByteList to, byte[] bytes, int start, int len, Encoding enc, Encoding resEnc) {
         int p = start;
         int end = p + len;
diff --git a/core/src/main/java/org/jruby/util/StringSupport.java b/core/src/main/java/org/jruby/util/StringSupport.java
index abfa8c2beec..9c0aef9f75b 100644
--- a/core/src/main/java/org/jruby/util/StringSupport.java
+++ b/core/src/main/java/org/jruby/util/StringSupport.java
@@ -1877,16 +1877,6 @@ public static ByteList replaceInternal(int beg, int len, ByteListHolder source,
         return source.getByteList();
     }
 
-    @Deprecated
-    public static void replaceInternal19(int beg, int len, CodeRangeable source, CodeRangeable repl) {
-        strUpdate(beg, len, source, repl);
-    }
-
-    @Deprecated
-    public static void replaceInternal19(Ruby runtime, int beg, int len, RubyString source, RubyString repl) {
-        strUpdate(runtime, beg, len, source, repl);
-    }
-
     // MRI: rb_str_update, second half
     public static void strUpdate(int beg, int len, CodeRangeable source, CodeRangeable repl) {
         Encoding enc = source.checkEncoding(repl);