Definition of tight-lipped adjective from the Oxford Advanced Learner's Dictionary

     

    tight-lipped

     adjective
    adjective
    BrE
     
    ; NAmE
     
    Anger
     
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  1. 1not willing to talk about something Despite the rumours, government officials remained tight-lipped today.
  2. 2keeping your lips pressed firmly together, especially because you are angry about something He marched out of the room tight-lipped and white-faced. a tight-lipped reply See related entries: Anger
See the Oxford Advanced American Dictionary entry: tight-lipped