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sounded off; sounding off; sounds off
Definition of sound off
1 : to play three chords before and after marching up and down a line of troops during a ceremonial parade or formal guard mount
2 : to count cadence while marching
3a : to speak up in a loud voice
b : to voice one's opinions freely and vigorously
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Time Traveler for sound off
The first known use of sound off was in 1909
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