"Anointing CL or Scheme (core) as the final arbiter of the value of a language feature is tantamount (bucket list item #73: use "tantamount" in a sentence; check) is OK if it works for you, but it certainly wouldn't work for a lot of working programmers."

http://www.merriam-webster.com/dictionary/tantamount

To check it off the bucket list, I believe that you have to use it properly. It has to be tantamount to something.