an answer or reply, as in words or in some action.

Biology . any behavior of a living organism that results from an external or internal stimulus.

Ecclesiastical .

a verse, sentence, phrase, or word said or sung by the choir or congregation in reply to the officiant. Compare versicle ( def. 2 ) .

responsory.

Bridge . a bid based on an evaluation of one's hand relative to the previous bid of one's partner.

noun

asking , question , request

noun

acknowledgment , antiphon , back talk * , comeback , counter , double-take , echo , feedback , hit , kickback * , knee-jerk reaction * , lip * , rejoinder , reply , respond , retort , return , reverberation , riposte , sass * , snappy comeback * , vibes , wisecracknotes:reply is generally used when the answer is understood to be verbal - either written or oral; response , by contrast , has a more general application and may be used for a variety of reactions , reaction , retroaction , answer , antiphone , antiphony , hyperesthesia , repartee , replication