diff --git a/exercises/practice/forth/spec/forth_spec.cr b/exercises/practice/forth/spec/forth_spec.cr
index e9031191..51e97a3e 100644
--- a/exercises/practice/forth/spec/forth_spec.cr
+++ b/exercises/practice/forth/spec/forth_spec.cr
@@ -6,258 +6,258 @@ describe "Forth" do
     Forth.evaluate("1 2 3 4 5").should eq([1, 2, 3, 4, 5] of Int32)
   end
 
-  it "pushes negative numbers onto the stack" do
+  pending "pushes negative numbers onto the stack" do
     Forth.evaluate("-1 -2 -3 -4 -5").should eq([-1, -2, -3, -4, -5] of Int32)
   end
 
-  it "can add two numbers" do
+  pending "can add two numbers" do
     Forth.evaluate("1 2 +").should eq([3] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("+")
     end
   end
 
-  it "errors if there is only one value on the stack" do
+  pending "errors if there is only one value on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("1 +")
     end
   end
 
-  it "more than two values on the stack" do
+  pending "more than two values on the stack" do
     Forth.evaluate("1 2 3 +").should eq([1, 5] of Int32)
   end
 
-  it "can subtract two numbers" do
+  pending "can subtract two numbers" do
     Forth.evaluate("3 4 -").should eq([-1] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("-")
     end
   end
 
-  it "errors if there is only one value on the stack" do
+  pending "errors if there is only one value on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("1 -")
     end
   end
 
-  it "more than two values on the stack" do
+  pending "more than two values on the stack" do
     Forth.evaluate("1 12 3 -").should eq([1, 9] of Int32)
   end
 
-  it "can multiply two numbers" do
+  pending "can multiply two numbers" do
     Forth.evaluate("2 4 *").should eq([8] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("*")
     end
   end
 
-  it "errors if there is only one value on the stack" do
+  pending "errors if there is only one value on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("1 *")
     end
   end
 
-  it "more than two values on the stack" do
+  pending "more than two values on the stack" do
     Forth.evaluate("1 2 3 *").should eq([1, 6] of Int32)
   end
 
-  it "can divide two numbers" do
+  pending "can divide two numbers" do
     Forth.evaluate("12 3 /").should eq([4] of Int32)
   end
 
-  it "performs integer division" do
+  pending "performs integer division" do
     Forth.evaluate("8 3 /").should eq([2] of Int32)
   end
 
-  it "errors if dividing by zero" do
+  pending "errors if dividing by zero" do
     expect_raises(ArgumentError) do
       Forth.evaluate("4 0 /")
     end
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("/")
     end
   end
 
-  it "errors if there is only one value on the stack" do
+  pending "errors if there is only one value on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("1 /")
     end
   end
 
-  it "more than two values on the stack" do
+  pending "more than two values on the stack" do
     Forth.evaluate("1 12 3 /").should eq([1, 4] of Int32)
   end
 
-  it "addition and subtraction" do
+  pending "addition and subtraction" do
     Forth.evaluate("1 2 + 4 -").should eq([-1] of Int32)
   end
 
-  it "multiplication and division" do
+  pending "multiplication and division" do
     Forth.evaluate("2 4 * 3 /").should eq([2] of Int32)
   end
 
-  it "multiplication and addition" do
+  pending "multiplication and addition" do
     Forth.evaluate("1 3 4 * +").should eq([13] of Int32)
   end
 
-  it "addition and multiplication" do
+  pending "addition and multiplication" do
     Forth.evaluate("1 3 4 + *").should eq([7] of Int32)
   end
 
-  it "copies a value on the stack" do
+  pending "copies a value on the stack" do
     Forth.evaluate("1 dup").should eq([1, 1] of Int32)
   end
 
-  it "copies the top value on the stack" do
+  pending "copies the top value on the stack" do
     Forth.evaluate("1 2 dup").should eq([1, 2, 2] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("dup")
     end
   end
 
-  it "removes the top value on the stack if it is the only one" do
+  pending "removes the top value on the stack if it is the only one" do
     Forth.evaluate("1 drop").should eq([] of Int32)
   end
 
-  it "removes the top value on the stack if it is not the only one" do
+  pending "removes the top value on the stack if it is not the only one" do
     Forth.evaluate("1 2 drop").should eq([1] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("drop")
     end
   end
 
-  it "swaps the top two values on the stack if they are the only ones" do
+  pending "swaps the top two values on the stack if they are the only ones" do
     Forth.evaluate("1 2 swap").should eq([2, 1] of Int32)
   end
 
-  it "swaps the top two values on the stack if they are not the only ones" do
+  pending "swaps the top two values on the stack if they are not the only ones" do
     Forth.evaluate("1 2 3 swap").should eq([1, 3, 2] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("swap")
     end
   end
 
-  it "errors if there is only one value on the stack" do
+  pending "errors if there is only one value on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("1 swap")
     end
   end
 
-  it "copies the second element if there are only two" do
+  pending "copies the second element if there are only two" do
     Forth.evaluate("1 2 over").should eq([1, 2, 1] of Int32)
   end
 
-  it "copies the second element if there are more than two" do
+  pending "copies the second element if there are more than two" do
     Forth.evaluate("1 2 3 over").should eq([1, 2, 3, 2] of Int32)
   end
 
-  it "errors if there is nothing on the stack" do
+  pending "errors if there is nothing on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("over")
     end
   end
 
-  it "errors if there is only one value on the stack" do
+  pending "errors if there is only one value on the stack" do
     expect_raises(ArgumentError) do
       Forth.evaluate("1 over")
     end
   end
 
-  it "can consist of built-in words" do
+  pending "can consist of built-in words" do
     Forth.evaluate(": dup-twice dup dup ;1 dup-twice").should eq([1, 1, 1] of Int32)
   end
 
-  it "execute in the right order" do
+  pending "execute in the right order" do
     Forth.evaluate(": countup 1 2 3 ;countup").should eq([1, 2, 3] of Int32)
   end
 
-  it "can override other user-defined words" do
+  pending "can override other user-defined words" do
     Forth.evaluate(": foo dup ;: foo dup dup ;1 foo").should eq([1, 1, 1] of Int32)
   end
 
-  it "can override built-in words" do
+  pending "can override built-in words" do
     Forth.evaluate(": swap dup ;1 swap").should eq([1, 1] of Int32)
   end
 
-  it "can override built-in operators" do
+  pending "can override built-in operators" do
     Forth.evaluate(": + * ;3 4 +").should eq([12] of Int32)
   end
 
-  it "can use different words with the same name" do
+  pending "can use different words with the same name" do
     Forth.evaluate(": foo 5 ;: bar foo ;: foo 6 ;bar foo").should eq([5, 6] of Int32)
   end
 
-  it "can define word that uses word with the same name" do
+  pending "can define word that uses word with the same name" do
     Forth.evaluate(": foo 10 ;: foo foo 1 + ;foo").should eq([11] of Int32)
   end
 
-  it "cannot redefine non-negative numbers" do
+  pending "cannot redefine non-negative numbers" do
     expect_raises(ArgumentError) do
       Forth.evaluate(": 1 2 ;")
     end
   end
 
-  it "cannot redefine negative numbers" do
+  pending "cannot redefine negative numbers" do
     expect_raises(ArgumentError) do
       Forth.evaluate(": -1 2 ;")
     end
   end
 
-  it "errors if executing a non-existent word" do
+  pending "errors if executing a non-existent word" do
     expect_raises(ArgumentError) do
       Forth.evaluate("foo")
     end
   end
 
-  it "only defines locally" do
+  pending "only defines locally" do
     result = Array(Array(Int32)).new
     result << Forth.evaluate(": + - ;1 1 +")
     result << Forth.evaluate("1 1 +")
     result.should eq([[0], [2]])
   end
 
-  it "DUP is case-insensitive" do
+  pending "DUP is case-insensitive" do
     Forth.evaluate("1 DUP Dup dup").should eq([1, 1, 1, 1] of Int32)
   end
 
-  it "DROP is case-insensitive" do
+  pending "DROP is case-insensitive" do
     Forth.evaluate("1 2 3 4 DROP Drop drop").should eq([1] of Int32)
   end
 
-  it "SWAP is case-insensitive" do
+  pending "SWAP is case-insensitive" do
     Forth.evaluate("1 2 SWAP 3 Swap 4 swap").should eq([2, 3, 4, 1] of Int32)
   end
 
-  it "OVER is case-insensitive" do
+  pending "OVER is case-insensitive" do
     Forth.evaluate("1 2 OVER Over over").should eq([1, 2, 1, 2, 1] of Int32)
   end
 
-  it "user-defined words are case-insensitive" do
+  pending "user-defined words are case-insensitive" do
     Forth.evaluate(": foo dup ;1 FOO Foo foo").should eq([1, 1, 1, 1] of Int32)
   end
 
-  it "definitions are case-insensitive" do
+  pending "definitions are case-insensitive" do
     Forth.evaluate(": SWAP DUP Dup dup ;1 swap").should eq([1, 1, 1, 1] of Int32)
   end
 end