abnormous
/abˈnɔːməs/ /əbˈnɔːməs/Now rare
adjective
Originally: irregular; exaggerated; misshapen. In later use also (humorous, chiefly US ): enormous.
Origin
Early 18th century; earliest use found in Edmund Curll (d. 1747), bookseller. From classical Latin abnormis belonging to no distinct school or party (from ab- + norma) + -ous.