See also: proof, prof, and Prof.

English Edit

Etymology Edit

From the verb proof (make resistant), from the same Old French root as prove.

Suffix Edit


  1. Suffix added to a noun to form an adjective denoting imperviousness to that noun.

Usage notes Edit

  • Often used as the second part of a combined form (such as bullet-proof) rather than as a true suffix (as in waterproof)

Derived terms Edit

Translations Edit

See also Edit

Anagrams Edit