Get Better Meaning

(idiomatic) To recover from illness or other incapacitation.

Example: 1975 from the film Monty Python and the Holy Grail (quotes from Monty Python and the Holy Grail on Wikiquote):
  [Sir Bedevere]: What makes you think she's a witch?
  [Peasant]: Well, she turned me into a newt!
  [Sir Bedevere]: A newt?
  [Peasant]: ... I got better.