aberration, absurdity, alienation, amentia, arrested development, asininity, backwardness, battiness, blithering idiocy, brain disease, brainlessness, buffoonery, clownishness, crack-up, crackpottedness, crankiness, craziness, cretinism, daffiness, delirium, delusion, dementia praecox, derangement, desipience, distraction, dotage, dottiness, eccentricity, emotional disorder, emotional instability, fatuity, fatuousness, folly, foolery, foolheadedness, foolishness, frenzy, frivolity, frivolousness, functional nervous disorder, giddiness, goofiness, half-wittedness, hallucination, hysteria, idiocy, idiotism, illusion, imbecility, impracticality, inanity, ineptitude, infantilism, insaneness, irrationality, irresponsibility, lunacy, madness, maladjustment, mania, manic-depressive psychosis, melancholia, mental defectiveness, mental deficiency, mental derangement, mental disorder, mental handicap, mental illness, mental retardation, mindlessness, mongolianism, mongolism, mongoloid idiocy, moronism, moronity, nervous breakdown, nervous disorder, neurosis, niaiserie, nonsense, nugacity, nuttiness, paranoia, personality disorder, preposterousness, problems in living, profound idiocy, psychoneurosis, psychopathy, psychosis, queerness, reaction, retardation, retardment, sappiness, schizophrenia, screwiness, senselessness, silliness, simple-wittedness, simplemindedness, simpleness, simplicity, social maladjustment, stupidity, subnormality, thoughtlessness, triflingness, triviality, unbalance, unreasonableness, wackiness, weirdness, witlessness, zaniness, zanyism