- 1to keep changing your opinion or thoughts about something, especially in a way that annoys other people synonym waver
- 2 The country's leaders are still vacillating between confrontation and compromise.
NAmE//ˈvæsəˌleɪt//[intransitive] (formal)Verb Forms present simple I / you / we / they vacillate
he / she / it vacillates
past simple vacillated
-ing form vacillating
vacillationjump to other results
NAmE//ˌvæsəˈleɪʃn//noun [uncountable, countable]