vacillate
VAS-uh-laytverbMeaning to waver back and forth between choices
Memory hook VAS-illate: VANILLA? chocolate? VANILLA?. Kai stares at the menu: vanilla? chocolate? vanilla? He sways back and forth so long that the shop closes. To waver like that is to vacillate.
Kai vacillated between chocolate and vanilla until the shop closed.
In context For weeks Ada vacillated about the job offer: one day she was packing boxes for the move, and the next she was telling friends she would stay.
Similar waver, dither, hesitate, seesaw
Opposite decide, commit
From Latin vacillare, “to sway, to totter.”