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security

noun

si-ˈkyu̇r-ə-tē How to pronounce security (audio)
Definition of securitynext
1
as in defense
means or method of defending measures taken to beef up our national security

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Antonyms & Near Antonyms
2
as in guarantee
something given or held to assure that the giver will keep a promise their house will serve as security for the loan

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3
as in safety
the state of not being exposed to danger after the burglaries, police presence in the neighborhood was enhanced to give residents a stronger sense of security

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of security The letters reference stories published by the outlets that purportedly threatened national security. — Dan Mangan, CNBC, 23 Sep. 2026 The trademark security agreement, a copy of which was obtained via the USPTO database, was signed by on behalf of PWHL Holdings by Richard Moore, who is an executive vice president at TWG Global. — Justin Birnbaum, Sportico.com, 23 Sep. 2026 In this sense, satellites are evolving from primarily scientific and commercial tools for the UAE into critical components of its national infrastructure and security architecture. — Melissa Hancock, Fortune, 23 Sep. 2026 What’s more, the Tuesday notices to the networks didn’t just argue that the ban was due to national security. — Ted Johnson, Deadline, 23 Sep. 2026 See All Example Sentences for security
Recent Examples of Synonyms for security
  1. defense
  2. guarantee
  3. safety
  4. protection
  5. pledge
  6. ammunition
  7. safeguard
  8. shield
Noun
  • Russia's Defense Ministry said air defenses downed 254 Ukrainian drones overnight.
    — HANNA ARHIROVA, Arkansas Online, 29 Sep. 2026
  • With the 14th test flight of Starship, Elon Musk’s aerospace and defense company also plans to deploy 26 of its new Starlink V3 satellites.
    — Lora Kolodny, CNBC, 28 Sep. 2026
Definition of defense
Noun
  • The plant is expected to cost around $500 million and is being developed through a mix of equity and debt, with Circ also seeking grants and guarantees.
    — Rhonda Richford, Footwear News, 28 Sep. 2026
  • But models are also expected to get cheaper as AI becomes increasingly commodified, and there’s no guarantee that revenues will arrive precisely in time to meet pre-set payment schedules once the clock starts running.
    — Tobias Burns, CNBC, 28 Sep. 2026
Definition of guarantee
Noun
  • SpaceX launched its enormous Starship into orbit for the first time Monday and successfully delivered the most advanced Starlink satellites yet, but cut the flight short to ensure safety.
    — Arkansas Online, Arkansas Online, 29 Sep. 2026
  • Earlier this month, Cruz vociferously rejected the idea that artificial intelligence companies should be granted antitrust exemptions in order to collaborate on ways to implement industry-wide AI safety guardrails.
    — Daniel Libit, Sportico.com, 28 Sep. 2026
Definition of safety
Noun
  • Board members increased that protection to nine months in 2024, adding reimbursement for medical insurance coverage for Hill and her eligible dependents.
    — Nora O'Neill, Charlotte Observer, 23 Sep. 2026
  • The pollster and the newspaper described the lawsuit as a conspiracy theory and an affront to free speech protections.
    — Hannah Fingerhut, Los Angeles Times, 23 Sep. 2026
Definition of protection
Noun
  • Over the past few years, Dallas has been transformed into a hotbed for the financial services sector, with pledges for massive offices and headcounts coming from firms like Goldman Sachs, Morgan Stanley and JPMorgan Chase.
    — Ian Thomas, CNBC, 26 Sep. 2026
  • The statement said both sides will continue to work together on the pledge to reduce reciprocal tariffs on roughly $30 billion worth of goods.
    — ABC News, ABC News, 26 Sep. 2026
Definition of pledge
Noun
  • South Korea, the United States and others say North Korea has also supplied artillery, ammunition and missiles to Russia in return for economic and military assistance.
    — ABC News, ABC News, 28 Sep. 2026
  • Sanon is also accused obtaining an arsenal of weapons, ammunition and ballistic vests, culminating in the dead-of-night operation coordinated by his allies to storm Moïse’s private residence.
    — Jacqueline Charles, Miami Herald, 28 Sep. 2026
Definition of ammunition
Noun
  • Earlier this month the United Nations nuclear watchdog agency asked the body to hold Iran accountable for failing to stick with safeguards meant to prevent the development of nuclear weapons, according to diplomatic officials.
    — Adrienne Vogt, CNN Money, 23 Sep. 2026
  • Recent incidents involving models that bypassed safeguards or behaved deceptively have added urgency to the safety debate.
    — Aamir Khollam, Interesting Engineering, 23 Sep. 2026
Definition of safeguard
Noun
  • Some demonstrators cursed at police officers holding riot shields, while others yelled out as passing cars honked in support of the protest.
    — Arkansas Online, Arkansas Online, 21 Sep. 2026
  • There are also three shields on the top deck, high up where everyone can stare accusatorily at whoever is brazen enough to grab one.
    — Alice Burton, Vulture, 18 Sep. 2026
Definition of shield

Browse Nearby Words

securities
security
security blanket
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Cite this Entry

“Security.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/security. Accessed 29 Sep. 2026.

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More from Merriam-Webster on security

Britannica.com: Encyclopedia article about security

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