Taciturn \Tac"i*turn\, a. [L. taciturnus: cf. F. taciturne. See {Tacit}.] Habitually silent; not given to converse; not apt to talk or speak. -- {Tac"i*turn*ly}, adv. Syn: Silent; reserved. Usage: {Taciturn}, {Silent}. Silent has reference to the act; taciturn, to the habit. A man may be silent from circumstances; he is taciturn from disposition. The loquacious man is at times silent; one who is taciturn may now and then make an effort at conversation. web1913
taciturn adj : habitually reserved and uncommunicative [ant: {voluble}] wn