(as) quick as a wink

: not dead : living, alive

: acting or capable of acting with speed: such as

: fast in understanding, thinking, or learning : mentally agile

: living beings

: a painfully sensitive spot or area of flesh (such as that underlying a fingernail or toenail)

: the inmost sensibilities

: in a quick manner

: to shut one eye briefly as a signal or in teasing

: to close and open the eyelids quickly

: to avoid seeing or noting something

: a brief period of sleep : nap

: a hint or sign given by winking

: an act of winking