Pronunciation: /ˈkʊkuː/
noun a bird known for its distinctive call
A1 I heard a cuckoo singing in the forest.
A2 The cuckoo laid its eggs in another bird's nest.
B1 The cuckoo is known for its distinctive call.
B2 During springtime, the cuckoo can be heard throughout the countryside.
C1 Ornithologists study the behavior of cuckoos in their natural habitat.
C2 The cuckoo is a brood parasite, laying its eggs in the nests of other bird species.
adjective crazy or silly, often used to describe behavior
A1 The cuckoo clock chimed every hour.
A2 She wore a cuckoo hat to the costume party.
B1 The cuckoo behavior of the new employee was starting to annoy her coworkers.
B2 The artist's paintings were described as cuckoo by critics.
C1 The politician's proposal was dismissed as cuckoo by the opposition.
C2 The scientist's theory was initially seen as cuckoo, but later proved to be groundbreaking.
formal The cuckoo bird is known for laying its eggs in other bird's nests.
informal I heard that cuckoo bird singing in the trees this morning.
slang That movie was so bad, it was cuckoo!
figurative His behavior was so erratic, it was like he had a cuckoo clock in his head.
cuckooed
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have cuckooed
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cuckooing
cuckooed