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  • tear gas
    tear gas
    noun
    a gas that makes the eyes smart and water, thus producing a temporary blindness, used in modern warfare, to quell riots, etc.
  • tear-gas
    tear-gas
    verb (used with object)
    to subject to tear gas.
Synonyms

tear gas

1 American  
[teer] / tɪər /

noun

  1. a gas that makes the eyes smart and water, thus producing a temporary blindness, used in modern warfare, to quell riots, etc.


tear-gas 2 American  
[teer-gas] / ˈtɪərˌgæs /

verb (used with object)

tear-gassed, tear-gassing
  1. to subject to tear gas.


tear gas British  
/ tɪə /

noun

  1. Also called: lacrimator.  any one of a number of gases or vapours that make the eyes smart and water, causing temporary blindness; usually dispersed from grenades and used in warfare and to control riots

"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

Etymology

Origin of tear gas1

First recorded in 1915–20

Origin of tear-gas2

First recorded in 1945–50

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:

And when they turned to humour, it was almost always self-directed: joking about the kilometres logged fleeing baton charges or the absurdity of filming an outfit reveal moments before running into tear gas.

From BBC Jul. 22, 2026

Police in Kenya have fired tear gas to break up a protest in the central town of Nanyuki against the construction of an Ebola quarantine centre for US citizens.

From BBC Jun. 9, 2026

“John cleared a tear gas canister away from everyone,” Johnson said, pushing back on the government’s account and adding that tear gas had been deployed indiscriminately by law enforcement.

From Los Angeles Times Apr. 10, 2026

Thousands gathered in the streets of the capital Islamabad, many holding photos of late Iranian leader Ali Khamenei, with AFP witnessing police deploy tear gas to disperse crowds near the US embassy.

From Barron's Mar. 1, 2026

In what is also known as the “Battle of Toledo,” sheriff’s deputies used tear gas and fire hoses against Electric Auto-Lite Company strikers.

From "Fannie Never Flinched" by Mary Cronk Farrell

“It’s a different thing to ask, ‘Will you show up to this protest, where police might come and tear-gas us?’ versus ‘We’re getting whistles. Do you think you could help us with some extra baggies?’

From Slate Jan. 31, 2026

Officials said they had seized three tear-gas canisters and a blank rifle round during their searches of his home and office.

From The Wall Street Journal Sep. 9, 2025

This prompted police to fire tear-gas cannisters to try and stop the procession, which affected traffic.

From BBC Aug. 1, 2024

The announcement comes after Caputo, a former campaign aide to President Trump, faced criticism on Sunday for a series of aggressive, late-night tweets suggesting people tear-gas journalists and arguing with other users.

From Fox News Sep. 16, 2020

The gun rack, set between two of the eight windows, held a Remington shotgun, a Colt AR-15 assault rifle, a tear-gas gun, and many rounds of ammunition.

From "Newjack: Guarding Sing Sing" by Ted Conover

Mayor Ted Wheeler sided with protesters, at one point standing alongside black-clad demonstrators as they were tear-gassed.

From Los Angeles Times Feb. 10, 2023

The French government initially blamed Liverpool fans and fake tickets for the crowd chaos that led to supporters being tear-gassed and robbed.

From BBC Jul. 13, 2022

“Just got tear-gassed, but we’re good, baby, we’re good! We’re pushing forward now!”

From Seattle Times Nov. 9, 2021

They were tear-gassed, so the women were joined by a line dads armed with leaf blowers to disperse the gas.

From Salon Jul. 26, 2020

Thackeray reminisced at length about being tear-gassed blind in the November 1969 antiwar protests in Washington Circle, covering them for her college paper.

From The Hacker Crackdown, law and disorder on the electronic frontier by Sterling, Bruce

“I actually think we could be promoting COVID-19 by tear-gassing protesters,” said Balmes.

From Scientific American Jun. 8, 2020

She oversaw punitive operations along the southern border that included the tear-gassing of hundreds of desperate would-be refugees near the San Ysidro border crossing.

From Slate Apr. 9, 2019

State Sen. Maria Chappelle-Nadal, who represents Ferguson and live-tweeted her tear-gassing by police, is one of 10 Democrats outnumbered by 24 Republicans.

From Slate Aug. 15, 2014

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