reactive

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reactive

/ɹiːˈæktɪv/ UK
/ɹiˈæktɪv/ Canada, US
/ɹiːˈæktɪv/ Australia
/ɹiːˈɛktəv/ New Zealand

Rhymes with -æktɪv

adjective more reactive · most reactive

That reacts or responds to a stimulus.
That readily takes part in reactions. francium is the most reactive of the alkali metals.
Characterized by induction or capacitance rather than resistance.
Reacting to the past rather than anticipating the future, not predictive.

Opposite: proactive

Thesaurus

Closest in meaning: sensitive, unstable, excited, oxidizable, activated, responsiveness, reaction, responsive, response, interactive, corrective, test, secondary, remedial, active, react

adjective

Opposite: proactive

Translations

Every language

adj (in chemistry) able to react

Español	reactivo
Русский	реактивный reaktivnyj

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MLA

"reactive." Wiktionary, via Micwyn, micwyn.com/word/reactive. Accessed 6 Nov. 2026.

APA

reactive. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/reactive

Chicago

"reactive." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/reactive.

BibTeX

@misc{reactive_2026,
  title = {reactive},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/reactive},
  urldate = {2026-11-06}
}