do something on sight

on sight

As soon as someone or something is or can be seen. Police have orders to shoot the suspect on sight.
See also: on, sight
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

do something on ˈsight

do or feel something as soon as you see somebody/something: She complained constantly about the hotel, which she hated on sight.The soldiers were ordered to shoot on sight.
See also: on, sight, something
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
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