react.
To act in response.
Meaning & usage
To act in response.
How did she react to the news?
To act or perform a second time; to do over again; to reenact.
To return an impulse or impression; to resist the action of another body by an opposite force
Every body reacts on the body that impels it from its natural state.
To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.
To cause chemical agents to react; to cause one chemical agent to react with another.
To post a reaction (icon or emoji indicating how one feels about a posted message).
Where this word comes from
From re- + act. Piecewise doublet of redact.
An emoji used to express a reaction to a post on social media.
Sad reacts only
Where this word comes from
From re- + act. Piecewise doublet of redact.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.