Synonyms of 'warble'
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When a bird or an insect such as a cricket or grasshopper chirps, it makes short high-pitched sounds.
The birds chirped loudly in the hedges.
A cry is a loud, high sound that you make when you feel a strong emotion such as fear, pain, or pleasure.
Her brother gave a cry of recognition.
Thesaurus for warble from the Collins English Thesaurus
When a bird warbles , it sings pleasantly.