Comeback
Refute
a Re:re:?
A rebuttal?
If you say something, someone says something to you, and you say something back; what you say back can be a rebuttal if you're negating the previous statement, or an affirmation if you're reinforcing the previous statement.
Response
A return? Do you actually know the word? Or are you just guessing that it's a re- word?
Hmmm a reaction?
répondez, s'il vous plaît (RSVP)
Riposte
Rejoinder
Remark

