[ vas-uh-leyt ]
/ ˈvæs əˌleɪt /
verb (used without object), vac·il·lat·ed, vac·il·lat·ing.
to waver in mind or opinion; be indecisive or irresolute: His tendency to vacillate makes him a poor leader.
to sway unsteadily; waver; totter; stagger.
to oscillate or fluctuate.
Origin of vacillate
1590–1600; < Latin vacillātus (past participle of vacillāre to sway to and fro); see -ate1
Related formsvac·il·la·tor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for vacillator
The youth has within him both a Hamlet and a Saint-Just, both a vacillator and a zealot.Romain Rolland|Stefan Zweig
Anything to arouse this personator of our human mutability, this vacillator between doing and letting alone!
British Dictionary definitions for vacillator
/ (ˈvæsɪˌleɪt) /
to fluctuate in one's opinions; be indecisive
to sway from side to side physically; totter or waver
Derived Formsvacillation, nounvacillator, noun
Word Origin for vacillate
C16: from Latin vacillāre to sway, of obscure origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012