Other Word Forms of Abnormal
Origin of Abnormal
Alteration (influenced by ab–) of obsolete anormal from Medieval Latin anormālis blend of Late Latin abnormis (Latin ab- away from ab–1) (Latin norma rule gnō- in Indo-European roots) anōmalus anomalous
From American Heritage Dictionary of the English Language, 5th Edition
ab- + normal. First attested in 1835, replacing the earlier anormal and even earlier abnormous, from Latin abnormis (“departing from normal”), from either (ab- (“away from”) + norma (“rule, norm”)), or Ancient Greek ἀνώμαλος (anōmalos).
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