English edit

Etymology edit

oil +‎ -proof

Adjective edit

oilproof (comparative more oilproof, superlative most oilproof)

  1. Resistant to oil.

Verb edit

oilproof (third-person singular simple present oilproofs, present participle oilproofing, simple past and past participle oilproofed)

  1. (transitive) To make resistant to oil.