Retroaction

1. (n.) Action returned, or action backward.

2. (n.) Operation on something past or preceding.

Thesaurus Entries

action and reaction, answer, automatic reaction, autonomic reaction, backset, backsliding, backward motion, backward step, bounceback, echo, lapse, predictable response, reaction, recession, recidivation, recidivism, reentry, reflection, reflex, reflex action, refluence, reflux, regress, regression, relapse, reply, respondence, response, retrocession, retroflexion, retrogradation, retrogression, retrusion, return, reverberation, revulsion, rise, rollback, setback, sternway, throwback, unthinking response