VACILLATE Meaning of VACILLATE in English vacil|late BrE AmE ˈvæs ɪ |leɪt -ə- ▷ vacil|lated leɪt ɪd -əd AmE leɪt̬ əd▷ vacil|lates leɪts▷ vacil|lating leɪt ɪŋ AmE leɪt̬ ɪŋ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012