evil
A man was standing behind her husband, glaring evilly at her.
This is usually the point in a film where the villain laughs evilly.
The eagle's long, sharp talons glinted evilly.
We don't have any evidence that they are preparing to act evilly.
They believe that anyone who contradicts their beliefs is evilly inspired.

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