coo 
(k)
(k)v. cooed, coo·ing, coos
v.intr.
1. To utter the murmuring sound of a dove or pigeon or a sound resembling it.
2. To talk fondly or amorously in murmurs: The visitors cooed over the newborn baby.
v.tr.
To express or utter with soft murmuring sounds.
[Imitative.]
cooer n.
- companion
- companion
- companionable
- companionableness
- companionably
- companion animal
- companionate
- companionate marriage
- companion cell
- companion planting
- companionship
- companionway
- company
- company-grade officer
- company man
- company town
- company woman
- comparability
- comparable
- comparableness
- comparable worth
- comparably
- comparatist
- comparative
- comparatively