v. 25B6; verb DITHER, be indecisive, be undecided, waver, hesitate, be in two minds, blow hot and cold, keep changing one's mind; Brit. haver, hum and haw; informal dilly-dally, shilly-shally.
VACILLATE
Meaning of VACILLATE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012