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  • assassin
    assassin
    noun
    a murderer, especially one who kills a politically prominent person for fanatical or monetary reasons.
  • Assassin
    Assassin
    noun
    a member of a secret sect of Muslim fanatics operating in Persia and Syria from about 1090 to 1256, murdering their victims, usually Crusaders
Synonyms

assassin

American  
[uh-sas-in] / əˈsæs ɪn /

noun

  • assassins
    plural
  1. a murderer, especially one who kills a politically prominent person for fanatical or monetary reasons.

  2. (initial capital letter) one of an order of Muslim fanatics, active in Persia and Syria from about 1090 to 1272, whose chief object was to assassinate Crusaders.


Assassin 1 British  
/ əˈsæsɪn /

noun

  1. a member of a secret sect of Muslim fanatics operating in Persia and Syria from about 1090 to 1256, murdering their victims, usually Crusaders

"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

assassin 2 British  
/ əˈsæsɪn /

noun

  1. a murderer, esp one who kills a prominent political figure

"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

Noun Inflected Forms

Etymology

Origin of assassin

1525–35; < Medieval Latin assassinī (plural) < Arabic ḥashshāshīn eaters of hashish

Explanation

An assassin is someone who murders an important political or religious leader. Brutus is one of the most infamous assassins in history. He murdered Julius Caesar, who ruled Rome in the first century B.C. The word assassin, pronounced "uh-SASS-in," describes a person who murders a prominent person, like a political or religious leader. Often, this person is hired to kill, though he or she might act on personal motivations. To correctly spell assassin, remember that it has two double s's.

Keep Reading on Vocabulary.com

Vocabulary lists containing assassin

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:

One such role was Fuches, a mentor to Bill Hader’s assassin in HBO’s “Barry,” which earned Root his first Emmy nomination.

From Los Angeles Times Aug. 11, 2026

The big reveal in the opening of the film—which rivals a James Bond pre-credit sequence in longevity, action and skiing through the Alps—is that the ruthless assassin ruining everyone’s Austrian vacation is a woman.

From The Wall Street Journal Jul. 14, 2026

Lady Thatcher and her assassin are "the entrance point" to that issue, he says.

From BBC May 8, 2026

The shooting on Saturday, which Trump blamed on a "would-be assassin," also caused him to riff on one of his favorite topics -- the huge $400 million ballroom he is building at the White House.

From Barron's Apr. 26, 2026

“I heard him talking to Cain,” said a timid voice behind them, and they found Pelor, the youngest assassin, standing nearby.

From "Throne of Glass" by Sarah J. Maas

If you trace in this event the origins of a similar scene in Alias Grace and also one in The Blind Assassin, you would be right.

From The Wall Street Journal Nov. 2, 2025

And she has staged a number of plays at the National over the past 25 years, most recently Kerry Jackson and The Father and the Assassin, both last year.

From BBC Dec. 12, 2023

Its counterpart imperial stout, Vanilla Bean Assassin, is ranked No. 2, while another offering called Mornin’ Delight is ranked in the top 10.

From Seattle Times Jul. 27, 2023

“An Assassin in Utopia” links President James Garfield’s killer to an atmosphere of free love and religious fervor that gripped Oneida, N.Y., in the late 1800s.

From New York Times Feb. 6, 2023

The Assassin didn’t take her eyes off the girl.

From "The Reader" by Traci Chee

"This awoke not just Michoacan, but all of Mexico," she told AFP while surrounded by bodyguards to keep would-be assassins at bay.

From Barron's May 18, 2026

When asked why assassins keep targeting him, he answered, “I studied assassinations,” and suggested that “the people that make the biggest impact,” such as Abraham Lincoln, tend to be the targets.

From The Wall Street Journal Apr. 26, 2026

I don’t want to go too deep into the plot, which involves a supersonic weapon, stolen software, assassins on motorcycles and a common ticking-clock device, but it’s closer to “Moonraker,” say, than “Slow Horses.”

From Los Angeles Times Feb. 23, 2026

And, when that power comes on and pulls Scotland this way and that, enter the French assassins behind the scrum - all clever angles and deception, outrageous vision and ruthless execution.

From BBC Mar. 15, 2025

About a hundred yards from Booth’s camp, Jones dismounted, walked slowly, and whistled the secret signal as he came within earshot of the assassins.

From "Chasing Lincoln's Killer" by James L. Swanson

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