noun
UNISON
YOO-nih-suhn
noun
1
The state of matching pitch, sound, or action perfectly together.
"The choir sang the opening verse in unison."
"The crowd chanted in unison as the team scored."
How to Use UNISON
Learner’s notesIn plain EnglishEveryone doing or saying the same thing at exactly the same time.
Common pairings
sing in unison
speak in unison
move in unison
Word Forms
unisons plural
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Etymology
From Old French unisson, ultimately from Latin unus ("one") + sonus ("sound") — literally "one sound".