enormity (n.)
late 15c., "transgression, crime, irregularity," from Old French énormité "extravagance, enormity, atrocity, heinous sin," from Latin enormitatem (nominative enormitas) "hugeness, vastness, irregularity," from enormis (see enormous). Meaning "extreme wickedness" in English attested from 1560s; sense of "hugeness" (1792) is etymological but probably best avoided to prevent misunderstanding.