duck out

verb

ducked out; ducking out; ducks out

informal

: to leave suddenly and usually without telling anyone that one is leaving

We ducked out after the first act of the play.

—often + on or of

They ducked out on us without even saying goodbye.

I had to duck out of the meeting to take a phone call.

—often used figuratively and in a sneaky or improper way

He wants to duck out of the contract.

She ducked out on paying the bill for the meal.