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Synonyms

arsonist

American  
[ahr-suh-nist] / ˈɑr sə nɪst /

noun

  • arsonists
    plural
  1. a person who commits arson.


Other Word Forms

Noun Inflected Forms

Etymology

Origin of arsonist

First recorded in 1860–65; arson + -ist

Explanation

An arsonist is someone who deliberately sets houses on fire. Investigators who find empty gas cans near the scene of a blaze tend to suspect an arsonist is responsible. Arsonists destroy property by burning it; that can mean setting fire to buildings, boats, cars, or forested land. An arsonist's motives can include collecting insurance money after burning their own property — or violent revenge, by burning someone else's. The crime they're committing is arson, which is usually a felony because it's so destructive and dangerous. The Latin root of arsonist means "to burn."

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Vocabulary lists containing arsonist

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.

See Examples For:

Once again, he is both arsonist and fireman.

From Salon Oct. 31, 2025

He added: “The arsonist set the first fire, but the Fire Department proactively has a duty to do certain things.”

From Los Angeles Times Oct. 8, 2025

Indeed, Mark Zuckerberg offering Instagram-specific screen-time reports and time limits has the whiff of an arsonist handing out firefighting tips.

From Slate Sep. 5, 2025

The Line fire in San Bernardino County has burned mostly Forest Service land, but investigators believe an arsonist started it in an adjacent suburb.

From Los Angeles Times Sep. 21, 2024

He’d grown up being called a freak, an arsonist, because whenever he got angry, things burned.

From "The Mark of Athena" by Rick Riordan

Earlier this week, Muir rejected claims of no consequences for those who start rural fires and said arsonists could face prison in some cases.

From BBC May 2, 2026

His government banned construction on land affected by the blazes, and pledged harsher penalties for arsonists.

From Barron's Oct. 11, 2025

Ramirez said there are no locked facilities that cater to arsonists with mental health issues.

From Los Angeles Times Feb. 6, 2025

That has not stopped idle speculation that the Palisades had been targeted by arsonists to bring down the area’s richest neighborhoods, or that angry arsonists had started all the fires.

From Salon Jan. 13, 2025

These different features are then arranged so that a great variety of clergymen, murderers, senators, embezzlers, artists, dynamiters, humorists, arsonists, larcenists, poets, statesmen, base ball players, rinkists, pianists, capitalists, bigamists and sluggists are easily represented.

From Remarks by Bill Nye

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