proof1 Pronunciation: /pruːf/Translate proof | into French | into German | into Italian Spanish translation of proofn 1 u c (conclusive evidence) prueba (f) 2 c [Print] prueba (f) (de imprenta) 3 u (alcoholic strength) graduación (f) alcohólicaproof in other Oxford dictionaries Definition of proof in the British & World English dictionary Definition of proof in the US English dictionary