DUMB Meaning of DUMB in English dumb BrE AmE dʌm▷ dumbed dʌmd▷ dumber ˈdʌm ə AmE \ - ə r▷ dumbest ˈdʌm ɪst -əst ▷ dumbing ˈdʌm ɪŋ▷ dumbs dʌmz▶ ˈ dumb show BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012