The students grimaced at the teacher.

He grimaced.

She tasted the food and grimaced.

Tom grimaced slightly.

She grimaced.

Tom grimaced bravely.

Look, Tom – I've picked some raspberries. Do you want some?" asked Mary, shoving a few into her raspberry-smeared mouth. Tom grimaced. "It's nice of you to ask," he said, "but I can't stand raspberries. Really sorry, Mary!"

Tom grimaced.

He grimaced as if memories of his bitter past were crashing like waves inside his head.

Tom leant in to kiss Mary, but she recoiled with a grimace.