DictionaryheinousShockingly evil
adjective

heinous

HAY-nus/ˈheɪnəs/

Shockingly evil or morally wrong.

Raising a club over the bound captive is a heinous act of cruelty.

A captor raises a heavy club over a bound, defenseless captive who recoils in terror: a stark, non-graphic depiction of morally horrible cruelty.
Etymology

The hatred base gives the idea of something hateful or odious. In the selected sense, heinous describes conduct so morally horrible that it provokes abhorrence.

In context

Bench 4612:28
a heinous act of murder, uh one which saw Mr. Fowler linger uh for 2 days in increasingly dire medical distress
"Heinous Act of Murder" — Judge Delivers Brutal Sentencing Remarks

More examples

  • Nothing can excuse such a heinous act.
  • The investigation uncovers heinous abuses at the prison.
  • Survivors testify about the regime's heinous crimes.

Forms

heinous

heinously adverb — In a shockingly evil or wicked manner.

heinousness noun — The quality of being shockingly evil.

Similar words

atrocious
Emphasizes extreme cruelty or brutality rather than moral evil alone.
wicked
Means morally evil but can sound less severe or formal.