noun
diminishing, lessening
Synonyms: abatement, compression, condensation, constriction, contraction, cutback, decline, declining, decrescence, depression, diminution, discount, downturn, dwindling, ebb, falling off, loss, reduction, shrinkage, striction, subsidence, waning
Antonyms: addition, development, enlargement, expansion, growth, increase, raise
verb
grow less or make less
Synonyms: abate, calm down, check, contract, crumble, curb, curtail, cut down, decay, decline, degenerate, depreciate, deteriorate, devaluate, die down, diminish, droop, drop, drop off, dry up, dwindle, ease, ebb, evaporate, fade, fall off, lessen, let up, lighten, lose edge, lower, modify, narrow down, peter out, quell, quiet, reduce, restrain, run low, settle, shrink, shrivel, sink, slacken, slack off, slash, slow down, slump, soften, subside, tail off, wane, waste, weaken, wear away, wear down, wither
Antonyms: add, develop, enlarge, expand, grow, increase, raise