accumulation

1 a mass or quantity that has piled up or that has been gathered over a period of time a vast accumulation of evidence about the dangers of smoking Synonyms of accumulation accretion, assemblage, collection, cumulation, cumulus, gathering, lodgment (or lodgement), pileup Words Related to accumulation agglomerate, assortment, congeries, conglomerate, conglomeration, hodgepodge, hotchpotch, jumble, medley, mélange, mishmash, mix, mixture, motley, potpourri; agglomeration, clutter, hash, heap, litter, mass, pile; aggregate, aggregation, sum, totality; backlog, cache, fund, hoard, inventory, kitty, nest egg, reserve, stock, stockpile, store, supply

2 the act or process of becoming greater in number the accumulation of leaves on the ground is proceeding at a much faster rate than my raking Synonyms of accumulation accumulating, multiplication, addition, increase, mushrooming, proliferationWords Related to accumulation doubling, quadrupling, tripling; creep, growth, rise, spread; enlargement, escalation, expansion; amplification, distension (or distention), inflation; accretion, accrual, augmentation, cumulation; extension, lengthening; boost, gain, hike, increment, riseNear Antonyms of accumulation abatement, compressing, compression, condensation, condensing, constricting, constriction, contracting, contraction, diminishing, diminishment, diminution, drop, drop-off, fall, falloff, lessening, lowering, reduction, shrinkage, shrinking; retrenching, retrenchment, shorteningAntonyms of accumulation decrease