1. (n.) The quality or state of being sick or diseased; illness; disease or malady.

2. (n.) Nausea; qualmishness; as, sickness of stomach.

aberration abnormality acute disease affection affliction ailment alienation allergic disease allergy atrophy bacterial disease birth defect blight brain damage brainsickness cardiovascular disease chronic disease circulatory disease clouded mind complaint complication condition congenital defect craziness daftness defect deficiency disease deformity degenerative disease dementedness dementia derangement disability disease disorder disorientation distemper distraction endemic endemic disease endocrine disease epidemic disease folie functional disease fungus disease furor gastrointestinal disease genetic disease handicap hereditary disease iatrogenic disease ill ill health illness indisposedness indisposition infectious disease infirmity insaneness insanity irrationality loss of mind loss of reason lunacy madness malady malaise mania mental deficiency mental derangement mental disease mental disorder mental disturbance mental illness mental instability mental sickness mind overthrown mindsickness morbidity morbus muscular disease neurological disease nutritional disease occupational disease oddness organic disease pandemic disease pathological condition pathology pixilation plant disease possession protozoan disease psychosomatic disease queerness rabidness reasonlessness respiratory disease rockiness secondary disease seediness senselessness shattered mind sick mind sickishness signs strangeness symptomatology symptomology symptoms syndrome the pip unbalance unbalanced mind unhealthfulness unhealthiness unsaneness unsound mind unsoundness unsoundness of mind urogenital disease virus disease wasting disease witlessness worm disease