Definition of take the (or one's etc.) secret to the grave in US English:

take the (or one's etc.) secret to the grave

phrase

  • Die without revealing a secret.

    • ‘The barber told me the secret of Man-Mur, and I swore that I would take the secret to the grave, so I cannot reveal it to you, dear readers.’
    • ‘They had to die to take the secret to the grave with them.’
    • ‘But Margaret took her secret to the grave, dying in 1993 after a series of strokes.’
    • ‘Only you and I know about it, and I'll take the secret to the grave.’