[ U ] uk/pruːf/ us B2 a fact or a piece of information that shows something exists or is true
доказательство She showed us her passport as proof of her identity. [ + (that) ] My landlord has asked for proof that I'm employed.- proof suffix uk/pruːf/ us used at the end of words to mean 'protecting against' or 'not damaged by'
(как компонент сложных слов) непроницаемый для чего-либо a bullet proof vest a water proof jacket