not if I can help it

not if I can help it

Not if I am able to prevent it from happening. A: "John wants to sell Dad's old coin collection." B: "Not if I can help it! Those meant the world to Dad!"
See also: can, help, if, not
Farlex Dictionary of Idioms.

not if ˈI can help it

used for saying you do not want something to happen: ‘Your daughter told me that she wants to leave school when she’s 16.’ ‘Not if I can help it.’
See also: can, help, if, not
Farlex Partner Idioms Dictionary
See also:
  • not for a second
  • not for a minute
  • not for a moment
  • aint
  • ain't
  • not for a instant
  • not for a/one minute/moment/second/instant
  • not by any means
  • by no means
  • hope not