closemouthed

/ˈkloʊsˌmaʊðd/
adjective
  1. Not willing to talk much; secretive or reserved about sharing information.
    • The witness was closemouthed during the investigation, refusing to answer any questions.
    • My grandmother is closemouthed about her past, so we know very little about her childhood.
    • He remained closemouthed about his plans for the weekend.
Antonyms
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