The occurrence of a change for the worse.

synonyms: damage, harm.

Roget 659: deterioration, debasement; wane, ebb; recession etc. 287; retrogradation etc. 283^†; decrease etc. 36.    degeneracy, degeneration, degenerateness; degradation; depravation, depravement; devolution; depravity etc. 945; demoralization, retrogression; masochism.    impairment, inquination^†, injury, damage, loss, detriment, delaceration^†, outrage, havoc, inroad, ravage, scath^†; perversion, prostitution, vitiation, discoloration, oxidation, pollution, defoedation^†, poisoning, venenation^†, leaven, contamination, canker, corruption, adulteration, alloy.    decline, declension, declination; decadence, decadency^†; falling off etc. v.; caducity^†, decrepitude.    decay, dilapidation, ravages of time, wear and tear; corrosion, erosion; moldiness, rottenness; moth and rust, dry rot, blight, marasmus^†, atrophy, collapse; disorganization; delabrement etc. (destruction). 162; aphid, Aphis, plant louse, puceron^†; vinefretter^†, vinegrub^†.    wreck, mere wreck, honeycomb, magni nominis umbra [Lat.]; jade, plug, rackabones [U.S.], skate [U.S.]; tackey^†, tacky [U.S.].    ... show more

A symptom of reduced quality or strength.

synonym: deterioration.

Dutch: verarming, verslechtering

The condition of being unable to perform as a consequence of physical or mental unfitness:
— Hearing impairment.

synonyms: disability, disablement, handicap.

Dutch: lichaamsgebrek, gebrek, handicap, onbekwaamheid, arbeidsongeschiktheid, invaliditeit
Polish: niepełnosprawność, handicap

Damage that results in a reduction of strength or quality.

The act of making something futile and useless (as by routine).

synonyms: constipation, deadening, stultification.