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Synonyms

heinous

American  
[hay-nuhs] / ˈheɪ nəs /

adjective

  1. hateful; odious; abominable; totally reprehensible.

    a heinous offense.

    Synonyms:
    nefarious, villainous, atrocious, flagitious, flagrant, infamous, wicked
    Antonyms:
    admirable

heinous British  
/ ˈheɪnəs, ˈhiː- /

adjective

  1. evil; atrocious

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of heinous

1325–75; Middle English heynous < Middle French haineus, equivalent to haine hatred (derivative of haïr to hate < Germanic ) + -eus -ous


Explanation

A heinous crime is very evil or wicked. Of course, some people only use the term as an exaggeration, claiming that their parents' requirement that they write thank you notes after their birthdays is a heinous form of torture. Heinous descends from Middle English, from Old French haineus, from haine "hatred," from hair "to hate." So when you want to use the word heinous in all seriousness, think of acts that are considered hateful (or outrageous, and shocking). Think: treason, torture, the clubbing of baby seals. Heinous is pronounced HĀ-nəs.

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Vocabulary lists containing heinous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The film seems to suggest that we — the audience to this specious display of white-knighting nobility — are monsters who can act just as heinous as the criminals.

From Salon ● Sep. 26, 2026

Now reports that Singh may be set free have brought alive memories of the heinous crime.

From BBC ● Sep. 1, 2026

"This is the most heinous attack on an American national park in generations," said Laiken Jordahl, a national public lands advocate at the center.

From Barron's ● Aug. 17, 2026

Monaco's Prince Albert II described the incident as a "heinous crime" and "a shock to the entire Monegasque community".

From Barron's ● Jun. 30, 2026

Henri would go to great lengths to increase his height. heinous.

From "Woe Is I" by Patricia T. O'Conner

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