#1 abnormality n. [abnormalcy] an abnormal physical condition resulting from defective genes or developmental deficiencies. wn
#2 abnormality n. [mental defectiveness] retardation sufficient to fall outside the normal range of intelligence. wn
#3 abnormality n. [freakishness] marked strangeness as a consequence of being abnormal. wn
#4 abnormality n. [irregularity] behavior that breaches the rule or etiquette or custom or morality. wn
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