Someone who is taciturn is reserved, not loud and talkative. The word itself refers to the trait of reticence, of seeming aloof and uncommunicative. A taciturn person might be snobby, naturally quiet, or just shy.

Having its origin in the Latin tacitus, "silent," taciturn came to be used in mid-18th-century English in the sense "habitually silent." Taciturnity is often considered a negative trait, as it suggests someone uncommunicative and too quiet. Jane Austen wrote, "We are each of an unsocial, taciturn disposition, unwilling to speak, unless we expect to say something that will amaze the whole room, and be handed down to posterity with all the ├ęclat of a proverb."

Definitions of taciturn

adj habitually reserved and uncommunicative

incommunicative, uncommunicative
not inclined to talk or give information or express opinions
expressing much in few words
(British colloquial) not inclined to conversation
reticent, untalkative
temperamentally disinclined to talk
marked by a ready flow of speech
communicative, communicatory
able or tending to communicate
tediously prolonged or tending to speak or write at great length
chatty, gabby, garrulous, loquacious, talkative, talky
full of trivial conversation
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