1. (n.) The state or quality of being abnormal; variation; irregularity.

2. (n.) Something abnormal.

aberrance aberrancy aberration acute disease affection affliction ailment alienation allergic disease allergy anomaly atrophy bacterial disease birth defect blight brain damage brainsickness cardiovascular disease chronic disease circulatory disease clouded mind complaint complication conceit condition congenital defect conversation piece crackpotism crank crankiness crankism craziness criminality crotchet crotchetiness curio curiosity daftness defect deficiency disease deformity degenerative disease delinquency dementedness dementia derangement deviance deviancy deviation differentness disability disease disorder disorientation distemper distortion distraction divergence dottiness eccentricity endemic endemic disease endocrine disease epidemic disease erraticism erraticness exception folie freakiness freakishness functional disease fungus disease furor gastrointestinal disease genetic disease handicap hereditary disease iatrogenic disease idiocrasy idiosyncrasy illegality illness improbability improperness impropriety inadmissibility inapplicability inappositeness inappropriateness inaptitude inaptness incorrectness indecorousness indecorum indisposition infectious disease infelicity infirmity infraction insaneness insanity irrationality irregularity irrelevance irrelevancy kink loss of mind loss of reason lunacy madness maggot maladjustment malady malaise malformation mania mannerism mental deficiency mental derangement mental disease mental disorder mental disturbance mental illness mental instability mental sickness mesalliance mind overthrown mindsickness misalliance misjoinder misjoining mismatch morbidity morbus muscular disease museum piece neurological disease nonconformity nonesuch nutritional disease occupational disease oddity oddness organic disease pandemic disease pathological condition pathology peculiarity pixilation plant disease possession prodigiosity prodigy protozoan disease psychosomatic disease queerness quip quirk quirkiness rabidness rarity reasonlessness respiratory disease rockiness secondary disease seediness senselessness shattered mind sick mind sickishness sickness signs sinfulness singularity strange thing strangeness symptomatology symptomology symptoms syndrome the pip trick twist unbalance unbalanced mind uncommonness unconformity uncongeniality unconventionality unfitness unfittingness unlawfulness unnaturalness unrighteousness unsaneness unseemliness unsound mind unsoundness unsoundness of mind unsuitability unusualness urogenital disease violation virus disease wasting disease whim whimsicality whimsy wickedness witlessness worm disease wrong wrongfulness wrongness