Prostrating myself on the examining table, I tried not to flinch as she zapped my scores of clogged pores.
Our duty in this movement and in this time is to not fear and not flinch and not retreat a single inch.
The familiar tone of wary bewilderment made me flinch a little.
1570s, from obsolete flecche "to bend, flinch," probably from Old French flenchir "to bend," probably from Frankish *hlankjan or some other Germanic source (cf. Middle High German linken, German lenken "to bend, turn, lead"), from PIE root *kleng- "to bend, turn" (see link (n.)). Related: Flinched; flinching. As a noun, from 1817.