aggravate, decline, exacerbate, exasperate, worsen

alleviate, mitigate, forestall, exacerbate, lessen, relieve, counteract, remedy, palliate, aggravate, obviate, attenuate, minimize, assuage, rectify, reduce, elucidate, solve, undo, avert, stave off, allay, sooth, perpetuate, redressing, protract, extirpate, meliorate, negate, eradicate, ease, worsen, sensitize, induce, soften, overcome, prolong, insulate, engender, surmount, amplify, precipitate, decongest, cure, magnify, dispel, normalize, quell, trivialize, heighten, vitiate, smoothen, stem, abate, diminish, institutionalize, entrench, neutralize, prevent, stimulate, preempt, resolve, banish, soothe, curtail, dampen, eliminate, circumvent, rationalize, mediate, curb, inhibit, defuse, desensitise, potentiate, enlighten, catalyze, efface, hasten, externalise, addressing, accentuate, lighten, legitimize, deepen, communalise, reverse, humanise, undermine, becloud, extenuate, counterbalance, suppress, apprise, salve, compensate, avoid, cauterise, tamp down, constrain, prettify, effecting

advance, aid, alleviate, assuage, beautify, bounce back, build, bushel, condition, convalesce, develop, distill, doctor, down, educate, embellish, emend, enhance, enrich, fine-tune, fix, fructify, furbish up, get over, get well, heal, help, hone, iron out, lift, make pure, mend, palliate, perfect, pick up, polish, prettify, pull round, purify, put right, raise, recover, recuperate, refine, reform, regenerate, rehabilitate, relieve, remit, repair, restore, revitalize, straighten out, sublimate, touch on, turn around, upgrade

amelioratinga, ameliorative, amelioratory, meliorative

change state, turn

amend, better, improve, meliorate