REACTIVE
reactive
(adjective) participating readily in reactions; “sodium is a reactive metal”; “free radicals are very reactive”
reactive, responsive
(adjective) reacting to a stimulus; “the skin of old persons is less reactive than that of younger persons”
Source: WordNet® 3.1
Etymology
Adjective
reactive (comparative more reactive, superlative most reactive)
that reacts or responds to a stimulus
(chemistry) that readily takes part in reactions
(electronics) Characterized by induction or capacitance rather than resistance.
Reacting to the past rather than anticipating the future, not predictive.
Antonyms
• proactive
Anagrams
• creative
Source: Wiktionary
Re*act`ive, a. Etym: [Cf. F. réactif.]
Definition: Having power to react; tending to reaction; of the nature of
reaction.
– Re*act"ive*ly, adv.
– Re*act"ive*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition