hei ‧ nous /ˈheɪnəs/ BrE AmE adjective formal
[ Date: 1300-1400 ; Language: Old French ; Origin: haineus , from haine 'hate' ]
1 . very shocking and immoral:
a heinous crime
2 . American English spoken informal extremely bad:
The food in the cafeteria is pretty heinous.
—heinousness noun [uncountable]