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View synonyms for security

security

[ si-kyoor-i-tee ]

noun

, plural se·cu·ri·ties.
  1. freedom from danger, risk, etc.; safety.
  2. freedom from care, anxiety, or doubt; well-founded confidence.

    Synonyms: positiveness, certainty, assurance

  3. something that secures or makes safe; protection; defense.

    Synonyms: safety, safeguard

  4. freedom from financial cares or from want:

    The insurance policy gave the family security.

  5. precautions taken to guard against crime, attack, sabotage, espionage, etc.:

    claims that security was lax at the embassy;

    the importance of computer security to prevent hackers from gaining access.

  6. a department or organization responsible for protection or safety:

    He called security when he spotted the intruder.

  7. protection or precautions taken against escape; custody:

    The dangerous criminal was placed under maximum security.

  8. an assurance; guarantee.
  9. Law.
    1. something given or deposited as surety for the fulfillment of a promise or an obligation, the payment of a debt, etc.
    2. one who becomes surety for another.
  10. an evidence of debt or of property, as a bond or a certificate of stock.
  11. Usually securities. stocks and bonds.
  12. Archaic. overconfidence; cockiness.


adjective

  1. of, relating to, or serving as security:

    The company has instituted stricter security measures.

security

/ sɪˈkjʊərɪtɪ /

noun

  1. the state of being secure
  2. assured freedom from poverty or want

    he needs the security of a permanent job

  3. a person or thing that secures, guarantees, etc
  4. precautions taken to ensure against theft, espionage, etc

    the security in the government offices was not very good

  5. often plural
    1. a certificate of creditorship or property carrying the right to receive interest or dividend, such as shares or bonds
    2. the financial asset represented by such a certificate
  6. the specific asset that a creditor can claim title to in the event of default on an obligation
  7. something given or pledged to secure the fulfilment of a promise or obligation
  8. a person who undertakes to fulfil another person's obligation
  9. the protection of data to ensure that only authorized personnel have access to computer files
  10. archaic.
    carelessness or overconfidence


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Other Words From

  • nonse·curi·ty noun plural nonsecurities
  • over·se·curi·ty noun
  • self-se·curi·ty noun
  • subse·curi·ty noun plural subsecurities

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Word History and Origins

Origin of security1

First recorded in 1400–50; late Middle English securytye, securite(e), from Latin sēcūritās; secure, -ity

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Idioms and Phrases

In addition to the idiom beginning with security , also see lull into (false sense of security) .

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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