to hesitate, to waver, to falter
1. to show uncertainty or indecision
He began to hesitate before making the final decision.
Ele começou a vacilar antes de tomar a decisão final.
2. to vacillate or oscillate between two opinions
She vacillated between accepting and rejecting the job offer.
Ela vacilava entre aceitar e rejeitar a oferta de emprego.
3. to become unsteady or unstable (of objects or structures)
The building began to sway during the earthquake.
O edifício começou a vacilar durante o terremoto.
4. to tease or mock playfully (regional usage)
Stop teasing your little brother!
Para de vacilar seu irmãozinho!
NYC Slang
to trip up, to mess with someone (in teasing context)
Related Idioms & Phrases
vacilar na decisão - to waver in a decision
vacilar entre duas opções - to hesitate between two options
não vacilar - not to hesitate, to be steadfast
vacilar com alguém - to mess with or tease someone
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