- (intransitive) to react excessively to something
WordReference Random House Learner's Dictionary of American English © 2026
o•ver•re•act /ˌoʊvɚriˈækt/USA pronunciation v. [no object]
WordReference Random House Unabridged Dictionary of American English © 2026- to react or respond to something more strongly than is necessary.
o•ver•re•act
(ō′vər rē akt′),USA pronunciation v.i.
o′ver•re•ac′tion, n.
- to react or respond more strongly than is necessary or appropriate.
- over- + react 1960–65
Collins Concise English Dictionary © HarperCollins Publishers::
overreact /ˌəʊvərɪˈækt/ vb
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