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

But instead the sisters wind up confronting assassins, demons with human familiars, and revelations about their late mother’s place within Le Clan des Sorcières. — Literary Hub, 1 Oct. 2026

Separately in the episode, River (Jack Lowden) and Sid (Olivia Cooke) are on the run from a pair of assassins, while the rest of the team circles the wagons en route to a safe house. — Lisa De Los Reyes, HollywoodReporter, 30 Sep. 2026

Still, despite the typical procedural formula with cases tied to gun smugglers, cartel assassins and kidnappings, the show remains topical enough to keep viewers engaged. — Aramide Tinubu, Variety, 25 Sep. 2026

Ali’s mournful assassin is trying to stay one step ahead of his enemies and, likewise, the movie fights like hell to elude conventionality. — Los Angeles Times, 25 Sep. 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