Dictionary cuckooFoolish or absurd

adjective

cuckoo

KOO-koo/kˈʌkˌu/

Crazy, foolish, or absurd.

The self-watering umbrella is a cuckoo invention.

A watering can mounted above an umbrella pours water onto the umbrella and hanging boots.

Etymology

cuckooEnglishthe bird name, later used for a foolish person

Cuckoo is recorded as slang for crazy by 1918, after older bird-name use.

More examples

That sounds like a cuckoo plan.
They laughed at the cuckoo arrangement.

Forms

cuckoo

Similar words

absurd: Emphasizes lack of reason or sense.
zany: Suggests amusing unconventional foolishness.