THESAURUS
lessening
abatement, abating, abridgment, allaying, allayment, alleviating, alleviation, analgesia, anesthesia, anesthetizing, appeasement, assuagement, assuaging, attenuation, attrition, blunting, calming, chastening, contraction, contractive, curtailment, cushioning, cut, cutting, dampening, damping, deadening, declining, decrease, decreasing, decrement, decrescence, decrescendo, decrescent, deduction, deflation, deliquescent, demulsion, depletion, depreciation, depression, derogation, detraction, diminishing, diminishment, diminuendo, diminution, dip, disparagement, dulcification, dulling, dwindling, dying, dying off, ease, easement, easing, extenuation, extraction, fade-out, falling-off, hushing, impairment, languishing, languishment, leniency, letdown, letup, lightening, loosening, lowering, lulling, miniaturization, mitigating, mitigation, modulation, mollification, numbing, on the wane, pacification, palliation, quietening, quieting, reducing, reduction, reductive, relaxation, relaxing, relief, remedy, remission, retraction, retrenchment, sagging, salving, scaling down, shortening, shrinkage, simplicity, slackening, softening, soothing, subduement, subduing, subsiding, subtraction, tempering, tranquilization, truncation, waning, weakening
ROGET THESAURUS
lessening
Decrease
N
nonincrease, decrease, decrease, diminution,
lessening, subtraction, reduction, abatement, declension, shrinking (contraction, ), coarctation, abridgment, extenuation, subsidence, wane, ebb, decline, ebbing, descent, decrement, reflux, depreciation, deterioration, anticlimax, mitigation, unincreased, decreased, decreasing, on the wane, a gilded halo hovering round decay, fine by degrees and beautifully less.
Contraction
N
contraction, reduction, diminution, decrease of size, defalcation, decrement,
lessening, shrinking, compaction, tabes, collapse, emaciation, attenuation, tabefaction, consumption, marasmus, atrophy, systole, neck, hourglass, condensation, compression, compactness, compendium, squeezing, strangulation, corrugation, astringency, astringents, sclerotics, contractility, compressibility, coarctation, inferiority in size, contracting, astringent, shrunk, contracted, strangulated, tabid, wizened, stunted, waning, neap, compact, unexpanded &c (expand), contractile, compressible, smaller &c (small).