heinous
I have no respect for anyone who treats animals as heinously as he does.
The project was heinously mismanaged from start to finish.
The interior of the house had not been redone in many years, and the wallpaper was heinously ugly.

SMART Vocabulary: related words and phrases

Morally wrong and evil
abhorrent
abhorrently
amoral
amorality
anomie
dissipated
dissolute
dissolutely
dissoluteness
enormity
nefariousness
no goodidiom
no more Mr Nice Guyidiom
non-ethical
obscene
trespass
turpitude
unconscionable
unconscionably
unethical

You can also find related words, phrases, and synonyms in the topics:

Legal & illegal