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security - definition and synonyms


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noun [uncountable] security pronunciation in British English /sɪˈkjʊərəti/
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  1. 1
    safety from attack, harm, or damage

    Every precaution has been taken to ensure the personal security of the delegates.

    internal security:

    The information received is highly confidential and relates to internal security.

    tight/lax security (=good/bad security):

    The meeting took place amid extremely tight security.

    1. b.
      the department within an organization that protects buildings and workers

      If you won’t leave, I’ll have to call security.

  2. 2
    a feeling of confidence and safety, or a situation in which you can feel confident and safe

    It gave her the security of knowing there was someone she could talk to.

    a sense/feeling of security:

    A predictable routine gives children a sense of security.

    1. a.
      the degree to which you can feel confident and safe
      financial/job security:

      She was concerned about her financial security.

  3. 3
    business property or goods that you agree to give to someone who has lent you money if you cannot pay the money back

    Additional security for any loan may be required by the bank.


sea lion

in an online conversation, repeatedly asking a person questions which suggest that you are interested in what they are talking about, but are actually intended to annoy them

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