noun / adjective
cuckoo
KOO-koo/kˈʌkˌu/
A bird known for a repeated two-note call.
A cuckoo repeats its two-note call from somewhere in the trees.

Etymology
The bird name imitates its call. It later meant a “stupid person,” perhaps because of the bird’s endlessly repeated call, before becoming an adjective meaning crazy or absurd.
In context
this year I will live happily ever after but that's like cuckoo fantasy I only that's never gonna happen is it
More examples
- Some cuckoos lay their eggs in other birds' nests.
- We hear the cuckoo long before we spot it.
- The clock imitates a cuckoo's call every hour.
Forms
cuckoo · cuckoos