reaction

noun

An action or statement in response to a stimulus or other event.

(chemistry) A transformation in which one or more substances is converted into another by combination or decomposition.

(Internet) An icon or emoji appended to a posted message by a user to express their feeling about it.

(politics) Reactionary politics; a period in which reactionary thought or politics is resurgent or dominant.

(Misesian praxeology, Austrian economics) Unpurposeful behavior.

Roots

rere- · Latin · back ago-act · Latin · do, drive

Synonyms for reaction

responsen backlashn retroactionn retortn rejoindern respondencen feedbackn riposten counteractionn reflexn

Synonyms & related words for reaction

Find synonyms, related words, and the definition of reaction — including response, backlash, retroaction, retort, rejoinder, respondence. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to reaction

Explore words related to reaction — words associated with it, words that go with it, and its nearest matches in meaning. Related words include overreaction, reacting, reacts, reacted, immunoreaction, reactant, disproportionation, solvolysis. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for reaction

Common synonyms for reaction include response, backlash, retroaction, retort, rejoinder, respondence, feedback, riposte — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does reaction come from?

The word reaction breaks down into 2 roots of Latin origin: re-, from Latin re (“back”); and -act, from Latin ago (“do, drive”). Explore each root to see other English words built from the same source.