abnormality (n.)

1846, "an instance of abnormality, irregularity, deformity;" 1853 as "fact or quality of being abnormal," from abnormal (q.v.) + -ity. Earlier was abnormity (1731), but according to OED this word has more "depreciatory force" than the later one. Abnormalism "tendency to be abnormal" is from 1847. As a verb, abnormalize (1855) seem to be rare.

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