in a/the flash of an/the eye

in a/the flash of an/the eye

So quickly as to seem almost imperceptible (i.e., in the space of time it takes a person to blink). In the flash of an eye, the home team has taken total control of this match. Working on Wall Street, you get used to massive financial changes happening in a flash of the eye. When we got into that car accident, our lives changed in the flash of an eye.

See also: an, eye, flash, of

Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.