Open English Wordnet
Adjectives
(a)responsive, antiphonalcontaining or using responses; alternating“responsive reading”, “antiphonal laughter”
(a)responsivereadily reacting or replying to people or events or stimuli; showing emotion“children are often the quickest and most responsive members of the audience”
(s)reactive, responsivereacting to a stimulus“the skin of old persons is less reactive than that of younger persons”