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  1. Dictionary
    top secret
    /tɒp ˈsiːkrət/

    adjective

    • 1. of the highest secrecy; highly confidential: "the experiments were top secret"

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  2. dictionary.cambridge.org › dictionary › englishTOP SECRET | English meaning - Cambridge Dictionary

    TOP SECRET definition: 1. (of information) extremely secret and not to be told to anyone outside a particular group of…. Learn more.

  3. www.collinsdictionary.com › dictionary › englishTOP SECRET definition and meaning | Collins English Dictionary

    Top secret information or activity is intended to be kept completely secret, for example in order to prevent a country's enemies from finding out about it. The top secret documents had to do with the most advanced military equipment.

  4. www.merriam-webster.com › dictionary › top secretTop secret Definition & Meaning - Merriam-Webster

    1. : protected by a high degree of secrecy. a top secret weapon. a top secret meeting. 2. a. : containing or being information whose unauthorized disclosure could result in exceptionally grave danger to the nation. top secret messages. compare confidential, secret. b. : of or relating to top secret documents. a top secret clearance.

  5. dictionary.cambridge.org › us › dictionaryTOP SECRET | definition in the Cambridge English Dictionary

    adjective. us / ˌtɑːp ˈsiː.krət / uk / ˌtɒp ˈsiː.krət / Add to word list. (of information) extremely secret and not to be told to anyone outside a particular group of people: These papers are top secret. [ before noun ] a top-secret military research project. SMART Vocabulary: related words and phrases. Secrecy and privacy. anonymity.

  6. www.oxfordlearnersdictionaries.com › definition › englishtop secret adjective - Definition, pictures, pronunciation and...

    Definition of top secret adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  7. www.collinsdictionary.com › dictionary › english-wordAll content related to 'top secret' - Collins Online Dictionary

    Top secret information or activity is intended to be kept completely secret, for example in order to prevent a country's enemies from finding out about it. More Definitions of 'top-secret'

  8. www.thefreedictionary.com › top-secretTop-secret - definition of top-secret by The Free Dictionary

    1. Containing information whose unauthorized disclosure would pose the gravest threat to national security: authorized for access to top-secret reports. 2. Of or relating to top-secret information: top-secret clearance. 3. Accessible or known to authorized personnel only: a top-secret reconnaissance mission.

  9. www.dictionary.com › browse › top-secretTOP-SECRET Definition & Meaning | Dictionary.com

    containing information whose disclosure would cause exceedingly grave damage to the nation and therefore classified as needing the highest level of secrecy and security.

  10. dictionary.cambridge.org › us › dictionaryTOP-SECRET definition | Cambridge Learner’s Dictionary

    TOP-SECRET meaning: Top-secret information is very important and must not be told to anyone.. Learn more.

  11. www.ldoceonline.com › dictionary › top-secrettop-secret | meaning of top-secret in Longman Dictionary of ...

    top-secret meaning, definition, what is top-secret: top-secret documents or information must...: Learn more.