adj.
Pronunciation: ( ˌ )ab- ' no ̇ r-m ə l, ə b-
Function: adjective
Etymology: alteration of French anormal, from Medieval Latin anormalis, from Latin a- + Late Latin normalis normal
Date: circa 1836
: deviating from the normal or average : UNUSUAL , EXCEPTIONAL < abnormal behavior>
– ab · nor · mal · ly \ -m ə -l ē \ adverb