dumb Pronunciation: /dʌm/Translate dumb | into French | into Italian | into Spanish German translation of dumbadj. 1 stumm 2 (coll.) (stupid) doof (ugs.)Phrasal verbs dumb downv.t. & i. (coll.) verflachendumb in other Oxford dictionaries Definition of dumb in the British & World English dictionary Definition of dumb in the US English dictionary