COO

n., v., & int.

--n. a soft murmuring sound like that of a dove or pigeon.

--v. (coos, cooed)

1. intr. make the sound of a coo.

2 intr. & tr. talk or say in a soft or amorous voice.

--int. Brit. sl. expressing surprise or incredulity.

Derivatives:

cooingly adv.

Etymology: imit.