answering, replying or responding / able to receive and respond to external stimuli / using antiphons; antiphonal / susceptible to the feelings of others

In a responsive manner.

The quality or state of being responsive. / The ability of a machine to adjust to external influences.

plural of responsiveness

(rare) An answer or reply; a response.

plural of responsion

A measure of responsiveness / (physics) A measure of the gain of a system

Misspelling of responsibility.

The state of being responsible, accountable, or answerable. [from 18th c.] / The state of being liable, culpable, or responsible for something in particular.

An answer or reply, or something in the nature of an answer or reply. / The act of responding or replying; reply: as, to speak in response to a question. / An oracular answer.