English Reference
Noun

assailant

n. countable
C1 Advanced US /əˈseɪɫənt/ UK /ɐsˈeɪlənt/ as·sailant UK spelling assailant's, assailant's

n.a person who physically attacks someone else. It is a formal word often used in news reports or by the police.

n.a person who physically attacks another. Often used in legal or journalistic contexts to refer to the perpetrator of a violent act.


SIMPLE

The victim managed to describe her assailant to the police.

CONTEXTUAL

Witnesses reported seeing the assailant flee the scene on foot immediately after the robbery took place.

COMPLEX

The prosecution argued that the defendant was the primary assailant, citing forensic evidence that placed him at the scene during the struggle.

Usage

Typically used in formal or legal contexts rather than casual conversation.

Several people were injured when the armed assailant lunged at Acton.

The Guardian· 6 Sept 2026

In one instance,  a UN police officer named Gladys Nkeh , from Cameroon, helped a 13-year-old girl who was raped get medical care and helped authorities arrest her assailant.

UN News· 6 Sept 2026

From Old French assaillant, from the verb assaillir, from Late Latin assalīre, from Latin ad (“to, towards”) + salīre (“to jump”). Equivalent to assail + -ant.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin ad
Level C1 · Advanced
Frequency Occasional
Updated