English Reference

Word

mob

US/ˈmɑb/

UK/mˈɒb/

Definitions

01angry crowd

B2 · Upper Intermediate Countable noun

n. a large, noisy, and often violent group of people.

n. a large or disorderly crowd of people, especially one intent on causing trouble or violence.

“An angry mob gathered outside the courthouse to protest the decision.”

“The police struggled to contain the mob as it surged toward the gates of the embassy during the height of the riots.”

Synonyms

02organized crime

B2 · Upper Intermediate Countable noun Law Informal

n. a group of people involved in organized crime, like the Mafia.

n. a criminal organization or syndicate, specifically referring to the Mafia or similar groups.

“He was arrested for his alleged connections to the local mob.”

“Federal investigators spent years tracking the financial transactions of the mob before they finally secured enough evidence for an indictment.”

03gaming character

C1 · Advanced Countable noun Computing Slang

n. a monster or character in a video game that you have to fight.

n. a non-player character (NPC) in a video game, typically one that is hostile and intended for combat.

“The player was defeated after being surrounded by a large group of mobs.”

“The game's difficulty spikes significantly when multiple high-level mobs spawn simultaneously in the dungeon.”

Synonyms

Antonyms

04group of animals

B2 · Upper Intermediate Countable noun American English · Dialect

n. a group of animals, especially sheep, cattle, or kangaroos.

n. a collective noun for a group of animals, particularly livestock or Australian wildlife.

“A mob of kangaroos hopped across the road just as the sun was setting.”

“The drover managed to keep the mob of cattle together despite the sudden thunderstorm that threatened to scatter them.”

Synonyms

05to crowd around

B2 · Upper Intermediate

v. to crowd around someone in a noisy or excited way.

v. to crowd around or surround someone, either with hostile intent or out of intense admiration.

“Fans began to mob the singer as soon as she stepped out of the car.”

“Reporters continued to mob the witness, shouting questions and blocking his path to the waiting vehicle.”

Synonyms

swarmsurroundbesiege

Collocations

Common phrases and expressions where native English speakers use the word “mob” in context.

Verb

01. be mobbed by fans

“The pop star was mobbed by fans as soon as she stepped out of the limousine.”

verb + prep + noun

02. disperse the mob

“Authorities used water cannons to disperse the mob before any property was damaged.”

verb + noun

03. incite a mob

“The speaker was accused of trying to incite a mob to violence during his controversial rally.”

verb + noun

Adjective

04. angry mob

“The angry mob gathered outside the courthouse, demanding that justice be served.”

adj + noun

05. lynch mob

“The trial was conducted in a feverish atmosphere, resembling a lynch mob rather than a court of law.”

adj + noun

06. unruly mob

“Police struggled to contain the unruly mob as they surged toward the barricades.”

adj + noun

Noun

07. mob mentality

“Psychologists often study how mob mentality can lead individuals to act against their own values.”

noun + noun

08. mob rule

“The country descended into mob rule after the central government collapsed.”

noun + noun

Real-World Examples

“Some 50,000 ceutíes (residents of Ceuta) recently took to the streets and a mob even stormed the migrants’ camp destroyed their shacks and threw their belongings into the sea or burned them.”
The Local 3 Sept 2026
“They had not long sat down in the restaurant when they were dragged outside by a mob.”
BBC News 3 Sept 2026
“They were sleeping in their jeep when a mob of 60 to 70 people led by Singh surrounded their vehicle, set fire to it and prevented them from escaping.”
BBC News 2 Sept 2026

Etymology

From Middle English mob, short for mobile, from Latin mōbile (vulgus) (“fickle (crowd)”).

Alteration of mab.

Clipping of mobile. The video-gaming sense is sometimes reported as an abbreviation of man or beast or of mobile object, but these are backronyms.

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

Word family

NOUN

Domain

Nautical

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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