not cricket

Idioms  

1. Unfair, unsportsmanlike, as in It's not cricket to let him go without notice. This term, in which the sport of cricket is equated with upright behavior, survives in America despite the relative unfamiliarity of the sport there. [Mid-1800s]

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Example Sentences

"Following the announcement that the Indian Premier League will resume on Saturday, Cricket Australia will support players in their individual decisions whether to return to India or not," Cricket Australia said in a statement.

From BBC

It is not cricket or politics that triggers the most ardent debate in Antigua and Barbuda.

From BBC

I'm very sporty like James, like Alf Wight, but not cricket.

From Salon

Not cricket: The tale of a British scam artist who left a trail of broken lives in his wake is retold in the new true-crime docuseries “The Puppet Master: Hunting the Ultimate Conman.”

From Los Angeles Times

At the time, most houses kept their storefronts partially covered with drab fabric and speaking to the media was not cricket.

From New York Times