atavism

reversion, return; revulsion., turning point, turn of the tide; status quo ante bellum ["The state in which it was before the war" (Latin)]; calm before a storm., alternation (periodicity); inversion; recoil; retreat, regression, retrogression; restoration; relapse, recidivism; atavism; vicinism.

revert, turn back; relapse; recoil; retreat; restore; undo, unmake; turn the tide, roll back the tide, turn the scale, tip the scale.

reverting; revulsive, reactionary; retrorse.

a rebours.

regress, regression; retrocession, retrogression, retrograduation, retroaction; reculade; retreat, withdrawal, retirement, remigration; recession (motion from); recess; crab-like motion., refluence, reflux; backwater, regurgitation, ebb, return; resilience, reflexion (recoil); volte-face., counter motion, counter movement, counter march; veering, tergiversation, recidivation, backsliding, fall; deterioration; recidivism, recidivity., turning point (reversion).

recede, regrade, return, revert, retreat, retire; retrograde, retrocede; back out; back down; balk; crawfish [U.S.], crawl; withdraw; rebound; go back, come back, turn back, hark back, draw back, fall back, get back, put back, run back; lose ground; fall astern, drop astern; backwater, put about; take the back track; veer round; double, wheel, countermarch; ebb, regurgitate; jib, shrink, shy., turn tail, turn round, turn upon one's heel, turn one's back upon; retrace one's steps, dance the back step; sound a retreat, beat a retreat; go home.

receding; retrograde, retrogressive; regressive, refluent, reflex, recidivous, resilient; crab-like; balky; reactionary.

back, backwards; reflexively, to the right about; a reculons, a rebours.