"Empowering Advanced Learners of English in Business and Academia - TOEFL / ESL / EFL"

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under lock and key

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Definition


Under heavily guarded security or supervision.

Context : Relationships, Social Life
Category: Idiom
Semantic:

Usage of “under lock and key”

  1. Her parents have her under lock and key. Her curfew is at 10pm.

Examples of idiom “under lock and key” from Twitter
  • Default avatar for Twitter user 'catirah'
    catirah:

    so i placed my heart under lock and key to take some time and take care of me.....

  • Default avatar for Twitter user 'bfranks24'
    bfranks24:

    @WMillegan seeeeeeeee yall gonna have to keep that place under lock and key for real

  • Default avatar for Twitter user 'VariantVal'
    VariantVal:

    A man who is "of sound mind" is one who keeps the inner madman under lock and key

  • Default avatar for Twitter user 'InMadison'
    InMadison:

    @Fancy_Lad You'll need to keep those under lock and key!