Main Entry: vac·il·late

Pronunciation: \ˈva-sə-ˌlāt\

Function: intransitive verb

Inflected Form(s): vac·il·lat·ed; vac·il·lat·ing

Etymology: Latin vacillatus, past participle of vacillare to sway, waver — more at wink

Date: 1597

1 a : to sway through lack of equilibrium b : fluctuate, oscillate
2 : to waver in mind, will, or feeling : hesitate in choice of opinions or courses

synonyms see hesitate

— vac·il·lat·ing·ly \-ˌlā-tiŋ-lē\ adverb

— vac·il·la·tor \-ˌlā-tər\ noun