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Synonyms

mobster

American  
[mob-ster] / ˈmɒb stər /

noun

mobsters plural
  1. a member of a criminal mob.


mobster British  
/ ˈmɒbstə /

noun

  1. a US slang word for gangster

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of mobster

1915–20, mob 1 (in the sense “a member of a criminal gang”)+ -ster

Explanation

A mobster is a bad guy who's involved in organized crime or belongs to a gang. There are many movies about mobsters that take place in the 1920s and 30s. As opposed to individual criminals, members of crime syndicates and gangs belong to a large, structured criminal organization. Someone who belongs to such a group is a mobster or a gangster. The term mobster comes from mob, another name for the Mafia, an Italian organized crime group. Originally mob meant just "a large group of people" or "the common people," from the Latin phrase mobile vulgus, "fickle common people."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As the mobster Hyman Roth and Michael Corleone plot to take over even more of a Cuba on the verge of revolution, Roth says:

From Salon • Mar. 24, 2026

Two of his most heralded prosecutions involved New York mobster John Gotti and General Manuel Noriega of Panama.

From Barron's • Mar. 21, 2026

In “The Mask,” also released in 1994, he played mobster Dorian Tyrell, antagonist to Jim Carrey’s Stanley Ipkiss, a.k.a. the Mask.

From Los Angeles Times • Feb. 19, 2026

Sylvester Stallone as an “over-the-hill goombah” who brings East Coast mobster methods to a heartland city?

From The Wall Street Journal • Oct. 31, 2025

In return for a favor to some white mobster, my new boss and his wife had just been given a six- months numbers banking privilege for the Bronx railroad area called Motthaven Yards.

From "The Autobiography of Malcolm X" by Alex Malcolm X;Hailey

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