close-lipped

Unwilling to talk openly or share details about someone or something; secretive. Does anyone know when we're moving to the new office? Management is being so close-lipped about everything. We need to remain close-lipped about our divorce until I figure out the right time to tell the rest of my family. I still don't know anything about Maria's new boyfriend because she's so close-lipped about him.

See also:

closed-lipped
closed-mouthed
close-mouthed
tight lips
tight-lipped
thrust (someone or something) on (someone or something)
thrust on
be the last (person) to (do something)
be the last person
be (as) close as wax

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