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Definitions

cuckoo

[koo-koo, kook-oo] / ˈku ku, ˈkʊk u /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Switzerland has nurtured many unexpected good things -- Albert Einstein's physics, the world economy, and the cuckoo clock leap to mind -- and is again helping the world appreciate improbable people and ideas."

From Barron's • Mar. 10, 2026

‘Periodically, I’ve had chats with neighbors about the heat. Most of the talks have been thoughtful, but some have veered into cuckoo territory,’ writes an L.A.

From Los Angeles Times • Jan. 22, 2026

The cuckoo is a parasitic bird that deposits its eggs in the nests of other birds, who then raise its hatchlings with their own.

From The Wall Street Journal • Dec. 4, 2025

The estate is home to rare wildlife, including curlew, mountain bumblebees, lapwings, red squirrels, cuckoo and merlin, as well as Atlantic salmon and critically endangered eels, but the conservationists say nature could be richer still.

From BBC • Oct. 29, 2025

“No offense, but this is all a little cuckoo for my taste,” Gibby said.

From "The First State of Being" by Erin Entrada Kelly