What are the antonyms for Unliablest?

• adj.

  • immune
  • Hindered
  ,
  • susceptible
  ,
  • unguarded
  ,
  • unprotected
  ,
  • vulnerable
  .

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...