it's not kosher

it's not kosher

It isn't fair, sportsmanlike, or legitimate. I know you want to avoid confrontation, but it's not kosher to break up with someone by text message. I don't see why you think it's not kosher. People do it all the time!
See also: kosher, not
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in periodicals archive ?
Aside from the fact that it's not kosher, we could find little reason to fault this bread.
The following is a sampling of those expressions: "I'm not happy with the principle, it's unethical." "If the pay was better it might be more palatable." "There's no choice if you want to work for them." "I signed with a bad taste in my mouth." "If I take a stand against them a hundred other writers will be there to take my place." "It's a hold-up, it's not kosher."
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