child's play

American  

noun

1. something very easily done.

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child's play British  

noun

1. informal something that is easy to do

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child's play Idioms  

1. Something easily done, a trivial matter. For example, Finding the answer was child's play for Robert, or The fight we had was child's play compared to the one I had with my mother! Originating in the early 1300s as child's game, the idiom was already used in its present form by Chaucer in The Merchant's Tale: “It is no child's play to take a wife.”

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Etymology

Origin of child's play

Middle English word dating back to 1350–1400

Example Sentences

But whipping up one of her full-scale smorgasbords of sprinkled donuts, popcorn and nigiri for a gallery display isn’t mere child’s play.

From Los Angeles Times

“They’re about to miss another payment. This is going to look like child’s play, what’s happening right now,” Duffy said.

From MarketWatch

"The crowd was child's play compared to Bethpage," said the Yorkshireman, referring to the treatment handed out to Europe's players at last September's Ryder Cup in New York.

From BBC

“This isn’t child’s play—the administration intends on making this a durable program,” said David Kim, a lawyer at Colombo & Hard, who is also representing the plaintiffs.

From Barron's

If you look at Hasbro’s earnings, everything seems like child’s play.

From Barron's