lipped adj. close-mouthed, silent, quiet, mum, mute, close-lipped, noncommittal, reticent, secretive, taciturn, unforthcoming, uncommunicative, reserved He remained tight-lipped about his activities during the war
TIGHT
Meaning of TIGHT in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012