forward, obverse, small

reversal, undo, overturn, counteract, halt, negate, stem, alter, nullify, change, stop, accelerate, ameliorate, rectify, invalidate, rescind, revert, curb, reversible, forestall, inexorable, hasten, stave off, thwart, modify, prevent, stanch, backwards, erase, counter, flip, reversion, explain, neutralize, irreversible, mitigate, effectuate, attenuate, remedy, stabilize, continuation, avert, curtail, decisively, turn, reconsider, sidestep, eliminate, reinstate, legitimize, mimic, uncouple, drastic, effecting, restore, correct, reshape, prolong, quash, precipitous, extirpate, annul, reinstitute, entrench, circumvent, rightward, hault, modification, gradual, deregulate, squelch, reattempt, revers, salvage, abrogate, pendulum, resurrect, abandon, capitalize, decouple, alleviate, europeanize, avoid, brinks, backfired, downward, shift, shift gears, lessen, reduce, disengage, tide, redefine, exacerbate, recapture, constitutionalize, inverse, codify, regain, fix, brakes, vindicate, reverses, discomfiture, disappointment, misfortune, setback, contretemps, defeat, miscalculation, breach, ex, mishap, rebuff, repulse, setbacks, adversity, defeats, disaster, disgrace, privation, affliction, reversed, unidirectional, opposite, unilinear, accelerating, obverse, oscillatory, similar, activation, analagous, upward, usual, vectorial, analogous, counterclockwise, excitation

about-face, about turn, alternate, commutate, commute, correct, deconsecrate, desecrate, desynchronize, exchange, falsify, flip, flip-flop, interchange, metamorphose, permute, regress, return, revert, right, switch, switch over, tail, transfigure, transmogrify, transpose, turn back, turn the tables, u-turn, undo

., 3tc, alternate, backward, backwards, cdna, change of mind, chemical equilibrium, coaster brake, commutate, complementary dna, counter-revolutionist, countermarch, counterrevolution, counterrevolutionary, counterrevolutionist, cut, delavirdine, double reverse, drug cocktail, epanodos, equilibrium, equilibrium constant, equilibrium law, flip, flip-flop, flip over, haart, highly active antiretroviral therapy, interchange, irreversible, lamivudine, law of chemical equilibrium, nevirapine, nnrti, non-nucleoside reverse transcriptase inhibitor, oxidation-reduction, oxidoreduction, peripeteia, peripetia, peripety, piked reverse hang, reciprocal, reciprocal cross, redox, rescriptor, retrovirus, revere, revers, reversal, reverse transcriptase inhibitor, reversible process, screwball, solarise, solarize, switch, tack, tail, throw, transit, turnabout, turnaround, turn over, twin, undercut, undo, unroll, unwind, viramune, wind off

auto, automobile, car, coin, machine, motorcar

alter, cancel, change, change of direction, decree, gear, gear mechanism, happening, natural event, occurrence, oppositeness, opposition, rule, side

annul, backward, blow, change by reversal, contrary, countermand, inverse, invert, lift, opposite, override, overrule, overthrow, overturn, rearward, repeal, rescind, reversal, reversion, revoke, setback, turn, turnabout, turnaround, verso