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-proof

From Wiktionary, the free dictionary

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See also: proof, prof, and Prof.

English

Etymology

From the adjective proof (fully resistant), from the same Old French root as prove.

Suffix

-proof

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

Usage notes

  • 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

Translations

See also

Anagrams

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