vacillate C2 Topic:Register & Style US /ˈvæ.sə.leɪt/ See IPA manual Freq #138044 Meanings 1 verb to move or sway in a rising and falling or wavelike pattern The line on the monitor vacillated in a steady rhythm. 2 verb to be undecided about something I am vacillating between two consoles. Thesaurus Synonyms 1 verb · to move or sway in a rising... waver 2 verb · to be undecided about... vibrate Word family Related forms vacillantvacillatingvacillationvacillatorvacillatory Etymology From Latin vacillātum, supine form of vacillō (“sway, waver”). Topics Register & Style External links Cambridge Dictionary Wiktionary Google Images # vacillate **Type:** Word **Level:** C2 **Part of speech:** verb **IPA (US):** /ˈvæ.sə.leɪt/ **Frequency rank:** 138044 ## Meanings 1. to move or sway in a rising and falling or wavelike pattern 2. to be undecided about something ## Examples - The line on the monitor vacillated in a steady rhythm. - I am vacillating between two consoles. ## Synonyms - waver - vibrate ## Related Forms - vacillant - vacillating - vacillation - vacillator - vacillatory ## Etymology From Latin vacillātum, supine form of vacillō (“sway, waver”). ## Topics - Register & Style markdown