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adj. Habitually untalkative. See Synonyms at silent.

adj. Silent; temperamentally untalkative; disinclined to speak.

adj. Habitually silent; not given to converse; not apt to talk or speak.

Silent or reserved in speech; saying little; not inclined to speak or converse.

Synonyms Mute, Dumb (see silent), reserved, uncommunicative, reticent.

adj. habitually reserved and uncommunicative

"Gen. Kosaner, appointed chief of the general staff last August, was known as a taciturn hardliner within the military."

reticent    buttoned-up    untalkative   

silent    reserved    reticent   

uncommunicative    unsociable    saturnine    surly    irate    unsuspecting    impassive    stalwart    kindly    crusty