without (even) batting an eyelash

without (even) batting an eyelash

Without having or displaying any sort of emotional response, especially to that which would normally elicit such a reaction. When we were traveling, Janet used to eat things like crickets and jellyfish without batting an eyelash. Be careful—guys like that will kill you without even batting an eyelash.

See also: batting, eyelash, without

Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.