hei|nous «HAY nuhs», adjective.
very wicked; extremely offensive; hateful: »
The gangster was punished for his heinous crimes by a long prison sentence.
SYNONYM(S): odious, infamous, atrocious.╂[< Old French haïnos (with English -ous) < haïne hatred < haïr to hate < Germanic (compare Old Saxon hatōn)]
–hei´nous|ly, adverb.
–hei´nous|ness, noun.
Useful english dictionary. 2012.