fortify (someone or something) against (something)

fortify (someone or something) against (something)

To strengthen or support someone or something, in order to improve chances of success against someone or something else. We need to fortify our bunker against enemy troops. I take vitamins to fortify my immune system against germs.
See also: fortify
Farlex Dictionary of Idioms.
See also:
  • be/have done with somebody/something
  • be in line with (someone or something)
  • better of
  • (someone or something) promises well
  • begin with
  • begin with (someone or something)
  • be rough on (someone or something)
  • bird has flown, the
  • beware of
  • beware of (someone or something)