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

Its tale of a Zainichi assassin (an ethnic Korean in Japan), as well as fraying political tensions between the North and South, take its characters far and wide, in a follow-the-money treasure hunt dangerously close to the halls of power. — Siddhant Adlakha, Variety, 20 Sep. 2026

Some earlier assassins expected it of themselves, canceling plots that would have killed bystanders. — Literary Hub, 18 Sep. 2026

Across Greengrass’ three Bourne movies, the elite assassin turns against the clandestine institution that created him, determined to escape its grip and bring its covert operations to light. — Brian Davids, HollywoodReporter, 10 Sep. 2026

Before Atlanta, the girls weren’t judged as heavily based on their reads or confessional assassin abilities. — Ile-Ife Okantah, Vulture, 7 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