adjective Date: 1794 of, relating to, or marked by reaction or reactance, 2. readily responsive to a stimulus, occurring as a result of stress or emotional upset , ~ly adverb ~ness noun reactivity noun
REACTIVE
Meaning of REACTIVE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012