retroactive, adj. 1. retrospective, ex post facto.
2. See - reactive (def. 1).
retrocede, v. 1. recede, fall or draw back, ebb, shrink, depart, run away; retire, give place, yield, withdraw; retreat, turn back, wheel, put about, veer round, double back, countermarch, turn tail.
2. regress, revert, return, retrograde, lose ground,
retrocession, n. 1. recession, receding, going back, reflux, refluence; retirement, withdrawal, retreat, departure, flight.
2. regression, retrogression, regress, retrogradation, recidivism.
retrograde, adj. 1. moving backward, retreating, retiring, returning, refluent, recessive, retrogressive, regressive, recidivous, recidivistic, atavistic; inverse, reversed, crablike, backward, counterclockwise, Brit. anticlockwise.
2. deteriorated, degraded, degenerate, worsened, decayed, blighted, debilitated, weakened, undermined, sapped, on the decline, on the wane, on the downgrade or downslide.
-v. 3. retrogress, regress, revert, reverse; retire, recede, retrocede, ebb; retreat, withdraw, fall or turn back, countermarch.
4. decline, deteriorate, degenerate, worsen, lose ground, relapse, backslide, recidivate; decay, wither, wane, fade, fail, go downhill.
retrogress, v. decline, degenerate, deteriorate, worsen; revert, regress, reverse, return, recidivate; decay, disintegrate, atrophy, wither, weaken, grow feeble, sink, fall, go downhill, lose ground; withdraw, retreat, retire, back up; ebb, wane, recede, retrocede, retrograde.
retrogression, n. 1. movement backward, retrogradation, regression, regress, recession, retrocession, retroaction; ebb, refluence, reflux; withdrawal, retreat, retirement.
2. Biol, retrograde metamorphosis; decline, deterioration, dilapidation, declination, declension, degeneration, degeneracy, reversion, relapse, decadence; senility, caducity, second childhood; impairment, vitiation, pejoration, degradation, depravation.
retrospect, n. 1. (all of the past) contemplation, reflection, consideration, meditation, survey, view, overview, review.
2. looking back or backward, reconsideration, afterthought, hindsight, Monday morning quarterbacking; recollection, remembrance, recalling, reminding, re-memoration, reminiscence, memory, revisualization.
3. in retrospect now, today, at this time; reconsidering, on second thought.
retrospective, adj. looking backward, directed backward, backward, reflective of the past; Law. retroactive, ex post facto.
return, v. 1. go back, revert to, reverse, back up, backtrack; recede, ebb, wane, retreat, turn back; relapse, backslide, regress, fall back, retrograde.
2. come back, recur, reoccur, reappear, recrudesce; revolve, roll around, come round again; retroact, recoil, rebound, boomerang.
3. reciprocate, give back, exchange, requite, recompense, indemnify, recoup, reimburse, refund; repay, pay back, release, give up, restitute, disgorge; retaliate, redress, revenge, avenge, vindicate, get even, get back.
4. replace, restore, put back, send back; reinstate, reinstall, reseat, reestablish, rehabilitate.