Taciturn

(a.) Habitually silent; not given to converse; not apt to talk or speak.

Thesaurus Entries

Spartan, abbreviated, abridged, aposiopestic, brief, brooding, brusque, clipped, close, close-lipped, close-tongued, closemouthed, compact, compendious, compressed, concise, condensed, contracted, crisp, curt, cut, docked, dour, dumb, economical of words, elliptic, epigrammatic, gnomic, indisposed to talk, laconic, mum, mute, pithy, pointed, pruned, quiet, reserved, reticent, sententious, short, short and sweet, shortened, silent, snug, sparing of words, speechless, succinct, summary, synopsized, terse, tight, tight-lipped, to the point, tongue-tied, truncated, uncommunicative, unexpressive, unloquacious, untalkative, word-bound, wordless