tight–lipped

tending not to speak frequently (as by habit or inclination) the cabinet official is usually tight-lipped about her private life Synonyms closemouthed, dumb, laconic, reserved, reticent, taciturn, tight-lipped, uncommunicativeRelated Words aloof, indrawn, inhibited, introverted, reserved, restrained; sedate, self-contained, sober, staid; backward, bashful, coy, demure, diffident, modest, retiring, self-effacing, sheepishNear Antonyms free-spoken, outspoken, vocal; gossipy, talebearing; diffuse, long-winded, prolix, rambling, verbose, windy, wordy; extroverted (also extraverted), gregarious, outgoing, sociableAntonyms blabby, chatty, communicative, conversational, gabby, garrulous, loquacious, motormouthed, mouthy, talkative, talky, unreserved