intransitive verb (-lated; -lating) see: wink Date: 1597 1. to sway through lack of equilibrium, fluctuate , oscillate , to waver in mind, will, or feeling ; hesitate in choice of opinions or courses, see: hesitate vacillatingly adverb vacillator noun
VACILLATE
Meaning of VACILLATE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012