coo (n.)
- aspirate
- bark
- bellow
- blare
- blubber
- boom
- bray
- buzz
- cackle
- call
- carol
- caw
- chant
- chatter
- cheep
- chirp
- chirrup
- chuck
- clack
- cluck
- cock-a-doodle-doo
- croak
- crow
- cuckoo
- drawl
- drum
- flute
- gabble
- gaggle
- gasp
- gobble
- growl
- grunt
- hiss
- honk
- hoo
- hoot
- keen
- lilt
- mumble
- murmur
- mutter
- pant
- peep
- pip
- pipe
- quack
- roar
- roll
- rumble
- scold
- scream
- screech
- shriek
- sigh
- sing
- snap
- snarl
- snort
- sob
- squall
- squawk
- squeal
- thunder
- trill
- trumpet
- twang
- tweet
- twit
- wail
- warble
- whine
- whisper
- whistle
- yap
- yell
- yelp
coo (v.)
- aspirate
- bark
- bawl
- bellow
- blare
- blat
- blubber
- boom
- bray
- breathe
- buzz
- cackle
- call
- carol
- caw
- chant
- chatter
- cheep
- chirk
- chirp
- chirr
- chirrup
- chitter
- chuck
- clack
- cluck
- croak
- cronk
- crow
- cuckoo
- drawl
- drum
- exclaim
- flute
- gabble
- gaggle
- gasp
- gobble
- growl
- grunt
- guggle
- hiss
- honk
- hoo
- hoot
- keen
- lilt
- mumble
- murmur
- mussitate
- mutter
- pant
- peep
- pip
- pipe
- quack
- roar
- roll
- rumble
- scold
- scream
- screech
- shriek
- sibilate
- sigh
- sing
- snap
- snarl
- snort
- sob
- squall
- squawk
- squeal
- susurrate
- thunder
- trill
- trumpet
- twang
- tweet
- twit
- wail
- warble
- whine
- whisper
- whistle
- yap
- yawp
- yell
- yelp
