assassin

noun

as·​sas·​sin ə-ˈsa-sᵊn 

plural assassins

1

: a person who commits murder

especially : one who murders a politically prominent person either for money or from fanatical adherence to a cause

… the location of the victim's gunshot wounds … might point to a professional assassin.

—Wendy Fry

2

Assassin plural Assassins, history : a person belonging to a Shia Muslim sect during the time of the Crusades whose members were notorious for murdering prominent enemies

For a third of a century, no enemy of the Assassins had ever managed to elude them.

—Amin Maalouf

Synonyms of assassin

• murderer
• killer

Examples of assassin in a Sentence

John Wilkes Booth was the assassin of Abraham Lincoln.

shot down by an unknown assassin

Recent Examples on the Web

Assassins follows a group of players competing in a game of strategy and wit inspired by the live-action game played in real life around the world. — Peter White, Deadline, 13 Oct. 2026

Today in the age of AI, the threats are not just from a lone assassin's bullet but autonomous attack drones. — Norah O'Donnell, CBS News, 11 Oct. 2026

Based on Nick Harkaway’s novel The Price You Pay, the show follows Jackie Price, a former drug queenpin hunted by seven elite assassins. — Abbey White, HollywoodReporter, 10 Oct. 2026

Next came Wild Horse Nine’s John Malkovich, who won the Best Actor prize at Venice for his performance as a CIA assassin going off the rails. — Nate Jones, Vulture, 9 Oct. 2026

Word History

Etymology

Medieval Latin assassinus, from Arabic ḥashshāshīn, plural of ḥashshāsh worthless person, literally, hashish user, from hashīsh hashish

First Known Use

circa 1520, in the meaning defined at sense 2

Phrases Containing assassin

• assassin bug

Rhymes for assassin

• bason
• casson
• fasten
• cytochalasin
• diapason

Kids Definition

assassin

noun

as·​sas·​sin ə-ˈsas-ən 

: a person who kills another person

especially : one who murders a politically important person either for pay or from loyalty to a cause