ˈhānəs sometimes ˈhēn- or ˈhīn- adjective
Etymology: Middle English heynous, from Middle French haineus hateful, from haine hate (from hair to hate, of Germanic origin; akin to Old Saxon haton to hate) + -eus -ous — more at hate
: hatefully or shockingly evil : grossly bad : enormously and flagrantly criminal : abominable , execrable
heinous offenses
a heinous act of treason
a heinous accusation
proposals of the most heinous nature — Elinor Wylie
Synonyms: see outrageous