abatement

noun

1 the storm still rages with no sign of abatement:

subsiding, dying down/away/out, dropping off/away, lessening, easing (off), decrease, diminishing, moderation, decline, declining, fade, dwindling, cooling off, tailing off, petering out, tapering off, wane, waning, ebb, relenting, desisting, weakening.

▷antonyms intensification.

2 as though sensing some abatement of my ferocity, she spoke to me gently:

lessening, decrease, moderation, easing, softening, soothing, relief, blunting, deadening, alleviation, mitigation, mollification, allaying, assuagement, palliation, tempering, appeasement, attenuation.

▷antonyms intensification.

3 formal the prospective purchaser demanded an abatement on the purchase price:

decrease, reduction, lowering.

▷antonyms increase.

abatement Oxford Dictionary of English