responsive (adj.)youdaoicibaDictYouDict[responsive 词源字典]
early 15c., "making answer," from Middle French responsif and directly from Late Latin responsivus "answering," from Latin respons-, past participle stem of respondere (see respond). Meaning "responding to influence or action" is from 1762. Related: Responsively; responsiveness.[responsive etymology, responsive origin, 英语词源]