Synonyms of retroaction

1 Syllable
lip, hit, sass
2 Syllables
feedback, kickback, reply, reaction, counter, respond, backlash, echo, vibes, return, retort
3 Syllables
rejoinder, riposte, wisecrack, comeback, double-take, antiphon
4 Syllables
retrogression, acknowledgment
5 Syllables
reverberation