Verb
express one's opinion openly and without fear or hesitation
express complaints, discontent, displeasure, or unhappiness
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Source: WordNetThis sounds like my autobiography, but I thought this would be a good time to sound off about myself, as I think that I have been silent too long about my views and opinions. Bob Kane
It was impossible to determine what he was saying, but I imagined he was telling all those present that they were nongs and maggots. I decided I quite liked watching the news with the sound off. Bill Bryson
If a policy is wrongheaded, feckless and corrupt, I take it personally and consider it a moral obligation to sound off and not shut up until it's fixed. David Hackworth
In journalism it is simpler to sound off than it is to find out. It is more elegant to pontificate than it is to sweat. Harold Evans
John spoke up at the meeting Source: Internet
My mother complains all day Source: Internet