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Synonyms

infamous

American  
[in-fuh-muhs] / ˈɪn fə məs /

adjective

  1. having an extremely bad reputation.

    an infamous city.

    Synonyms:
    notorious, ill-famed, disreputable
    Antonyms:
    reputable
  2. deserving of or causing an evil reputation; shamefully malign; detestable.

    an infamous deed.

    Synonyms:
    villainous, heinous, base, vile, shocking, wicked, odious, nefarious, scandalous, disgraceful
    Antonyms:
    admirable, praiseworthy
  3. Law.

    1. deprived of certain rights as a citizen, as a consequence of conviction of certain offenses.

    2. of or relating to offenses involving such deprivation.


infamous British  
/ ˈɪnfəməs /

adjective

  1. having a bad reputation; notorious

  2. causing or deserving a bad reputation; shocking

    infamous conduct

  3. criminal law

    1. (of a person) deprived of certain rights of citizenship on conviction of certain offences

    2. (of a crime or punishment) entailing such deprivation

"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

Usage

What does infamous mean? Infamous means having, deserving, or resulting in a bad or evil reputation. The word is typically used to describe people, actions, and events. It’s especially used in the context of violent crimes, scandals, and tragedies. Infamous is often used interchangeably with the word notorious, which most commonly means famous or well-known for a negative reason. But infamous is also sometimes used in a more general way to describe things, such as behavior, as shameful, shocking, detestable, vile, heinous, or scandalous. The state of quality of being infamous is infamy. Example: The infamous bank robber was known for setting fire to the crime scene while making his escape.

Other Word Forms

  • infamously adverb
  • infamousness noun

Etymology

Origin of infamous

First recorded in 1350–1400; Middle English, from Latin infām(is) ( see infamy) + -ous

Explanation

Someone who is infamous has a very bad reputation. If you become a Hollywood star and find yourself on the pages of gossip magazines for your affairs and addictions, you will have succeeded in becoming infamous. Infamous is from Latin infamis, for negative fame. If you're bad but unknown, then you're not infamous — it's reserved for those wicked and well-known people that capture our collective imagination. It is a strong and resonant term. Some synonyms are notorious, disgraceful, and odious. The stress is on the first syllable.

Keep Reading on Vocabulary.com

Vocabulary lists containing infamous

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.

Leaving it in the traditional IRA means dealing with the infamous pro-rata rule via Form 8606 for as long as you have an IRA, and there will be future taxation on earnings.

From MarketWatch • Apr. 20, 2026

Some even invoke the infamous T word: “transitory.”

From Barron's • Apr. 17, 2026

Its cells held infamous criminals such as Al Capone, and several unsuccessful escape attempts captured public imagination.

From Los Angeles Times • Apr. 3, 2026

High profile attacks like the infamous “Sony Hack” of 2014 helped convince corporate America of the need for robust cybersecurity defenses.

From The Wall Street Journal • Mar. 31, 2026

That morning, Thomas finally met the infamous Frypan, if only from a distance.

From "The Maze Runner" by James Dashner