Warbles

Part of speech: verb

Definitions

1. Emits a series of trilling or warbling sounds often characteristic of birds ; sings with a voice that vibrates or fluctuates in pitch
2. Makes melodic, fluttering noises typical of some birds ; vocalizes in a quivering or fluctuating manner
3. Produces a continuous, musical trilling sound similar to birdcalls ; performs singing that features wavering tone or vibration

Etymology: "Warbles" is the third-person singular present of the verb "warble," so its history is that of the verb. The verb's origin is uncertain: it may be onomatopoeic, imitating the trilling sounds it describes. The clearest documented thread runs through a noun. Middle English "werble" meant a mole cricket, and that noun is traced to a Frankish form, "*werbel," with a cognate in Walloon, a Romance language spoken in parts of Belgium and northeastern France, where "waerbea" carries the same sense. Why an insect's name would become a verb for birdsong is not recorded in the sources I can confirm. Still, the link is striking: the same root that named a small, chirring creature later described the warbling voice of a songbird.

Synonyms: chirps, trills, twitter, sing, call

Antonyms: silence, muteness, quiet, stillness, hush