sibilate (v.)
- assibilate
- bark
- bawl
- bellow
- blare
- blat
- blubber
- boom
- bray
- breathe
- buzz
- cackle
- chant
- chirp
- coo
- crow
- drawl
- effervesce
- exclaim
- fizz
- fizzle
- flute
- gasp
- growl
- grunt
- hiss
- hush
- keen
- lilt
- lisp
- mumble
- murmur
- mutter
- pant
- pipe
- roar
- rumble
- scream
- screech
- shriek
- shush
- sigh
- sing
- siss
- sizz
- sizzle
- snap
- snarl
- sneeze
- sniff
- sniffle
- snore
- snort
- snuff
- snuffle
- sob
- spit
- splutter
- sputter
- squall
- squash
- squawk
- squeal
- squelch
- squish
- swish
- thunder
- trumpet
- twang
- wail
- warble
- wheeze
- whine
- whish
- whisk
- whisper
- whistle
- whiz
- whoosh
- yap
- yawp
- yell
- yelp
- zip
