-proof

See also: proof, prof, and Prof.

English

Suffix

-proof

  1. Used to form adjectives denoting an impervious or impenetrable quality.

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

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:English_words_suffixed_with_-proof' title='Category:English words suffixed with -proof'>English words suffixed with -proof</a>

Translations

See also

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