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tight–lipped

1 ENTRIES FOUND:
tight–lipped /ˈtaɪtˈlɪpt/ adjective
tight–lipped
/ˈtaɪtˈlɪpt/
adjective
Britannica Dictionary definition of TIGHT–LIPPED
[more tight–lipped; most tight–lipped]
: not willing to speak about something
: having your lips pressed tightly together because you are thinking hard, angry, etc.