Synonyms and related words :
abatement, abridgment, alleviation, attenuation, contraction, dampening, damping, decrease, decrement, decrescence, deduction, deflation, depreciation, depression, diminishment, diminution, dying, dying off, extenuation, fade-out, languishment, lessening, letup, lowering, mitigation, reduction, relaxation, sagging, scaling down, simplicity, subtraction, weakening