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deterrent

American  
[dih-tur-uhnt, -tuhr-, -ter-] / dɪˈtɜr ənt, -ˈtʌr-, -ˈtɛr- /

adjective

  1. serving or tending to deter.


noun

  1. something that prevents, checks, or suppresses.

    a deterrent to crime.

  2. something that repels.

    Our lemongrass-based bug deterrent is natural, safe, and effective.

    Synonyms:
    hindrance, check, curb, restraint
  3. military strength or an ability to defend a country or retaliate strongly enough to deter an enemy from attacking.

deterrent British  
/ dɪˈtɛrənt /

noun

  1. something that deters

  2. a weapon or combination of weapons, esp nuclear, held by one state, etc, to deter attack by another

"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

adjective

  1. tending or used to deter; restraining

"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

Derived Forms

Etymology

Origin of deterrent

First recorded in 1820–30; from Latin dēterrent- (stem of dēterrēns ), present participle of dēterrēre; see origin at deter, -ent

Explanation

A deterrent makes you not want to do something. Let's say there's a giant pile of cookies being guarded by an angry dog — the dog is a deterrent. People talk about deterrents most often when discussing crime. The death penalty is supposed to be a deterrent — the idea is that people will be so scared of the death penalty that they won't commit certain crimes. Jail is another deterrent. Teachers also use deterrents — the possibility of getting detention is a deterrent that should encourage students to behave. A deterrent is the opposite of a reward. A reward encourages you to do the right thing, while a deterrent discourages you from doing the wrong thing.

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Vocabulary lists containing deterrent

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.

It is hoped that conceding a corner which could lead to conceding a goal is a more effective deterrent.

From BBC • Jun. 10, 2026

Kim’s nuclear program thus far has proven to be a deterrent against military attacks or attempts to forcibly unseat him from power, enabling him to shift his focus to the economy.

From The Wall Street Journal • Jun. 8, 2026

Berlin hopes the decision removes an irritant with Paris as they extend France’s nuclear deterrent to other European countries.

From The Wall Street Journal • Jun. 8, 2026

"The policy of continuously strengthening the country's self-defensive nuclear deterrent, as set out by the nation's leader, is an irreversible course that must be implemented without fail," she added.

From Barron's • Jun. 7, 2026

And because the death penalty is rarely given for crimes other than homicide, its deterrent effect cannot account for a speck of decline in other violent crimes.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt

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