Definition of "tight-lipped" []

• Unwilling to divulge information. (adjective)
• Having the lips pressed together. (adjective)

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• "I think that explains the expression of tight-lipped determination you see on the faces of so many fly fishermen these days."
• "Big Ten Commissioner Jim Delany has remained tight-lipped about options the conference might be weighing."
• "While some visitors speak enthusiastically of their visit here many of the residents prefer to keep rather tight-lipped perhaps wishing not to disturb the balance that keeps this place somewhat of a private paradise they selfishly wish to keep to themselves."