[n] behavior that breaches the rule or etiquette or custom or morality [n] marked strangeness as a consequence of being abnormal [n] retardation sufficient to fall outside the normal range of intelligence [n]
abnormal condition, abnormalcy, freakishness, irregularity, mental defectiveness
normalcy, normality
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, circul