What are the antonyms for Dropt hammer?

• v.

  • shoot
  • backfire
  ,
  • bear
  ,
  • conceal
  ,
  • create
  ,
  • fail
  ,
  • hold
  ,
  • keep
  ,
  • walk
  ,
  • withhold
  .

Well up on is typically used to describe someone who possesses a great amount of knowledge or expertise on a particular subject. However, there are several antonyms for this phrase...