What is another word for "deterioration"?

Roget's Thesaurus (1911) lists these synonyms for "deterioration": abate, abatement, abridge, abridgment, accident, adversity, again, and, anticlimax, attenuate, away, awry, back, backsliding, bad, badness, bale, bane, bate, birthmark, blain, blemish, blobber, blobber-lipped, bloodshot, blot, blotch, blow, blubber, blur, box, bruise, buffet, calamity, casualty, catastrophe, cause, coarctation, contract, contraction.