κελαηδάω

Etymology
+ modern suffix. Inherited from the medieval form (also spelling ) of, from , contracted form of , with  of [a] > [ai̯]. The spelling with eta, by false etymology to , modern.

Verb

 * 1)  to sing, chirp. cheep, chirrup, tweet
 * 2)  to babble, prattle talk at length happily
 * 3)  to sing like a bird, sing like a canary reveal secrets under pressure
 * 1)  to babble, prattle talk at length happily
 * 2)  to sing like a bird, sing like a canary reveal secrets under pressure
 * 1)  to sing like a bird, sing like a canary reveal secrets under pressure

Usage notes
This is the most common spelling. Babiniotis, in his dictionary, uses the spelling and explains the (by far) more common spelling given here as influenced by the word.