Usage examples for taciturn:

• Here he met an officer of the church, a man somewhat advanced in years, whom he had come to regard as rather reserved and taciturn in disposition. "A Knight Of The Nineteenth Century" – E. P. Roe

• This is my world; downstairs I am a different creature- taciturn harsh, and prone to sarcasm. "Not Like Other Girls" – Rosa N. Carey

• " Very good, sir," replied the taciturn Parker. "With Edge Tools" – Hobart Chatfield-Taylor