Synonyms of sound off

Verb

1. opine, speak up, speak out, animadvert, sound off, declare

usage: express one's opinion openly and without fear or hesitation; "John spoke up at the meeting"

2. sound off, strike up, play

usage: start playing; "The musicians struck up a tune"

3. complain, kick, plain, sound off, quetch, kvetch

usage: express complaints, discontent, displeasure, or unhappiness; "My mother complains all day"; "She has a lot to kick about"