UNDO Meaning of UNDO in English un|do BrE AmE ( ˌ ) ʌn |ˈduː▷ un|did ˈdɪd▷ un|does ˈdʌz▷ un|doing ˈdu ː ‿ɪŋ▷ un|done ˈdʌn Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012