taciturnta‧ci‧turn /ˈtæsətɜːn $ -ɜːrn/ adjective formal 
Word Origin
Word OriginWORD ORIGINtaciturn
ExamplesOrigin:
1700-1800 French taciturne, from Latin taciturnus, from tacitus; ➔ TACITEXAMPLES FROM OTHER DICTIONARIES
Thesaurus- It was unlike her to be so taciturn - she must have had something on her mind.
- It was unlike her to be so taciturn.
- The ship's captain was a taciturn man who spoke only to give orders.
- I tried to make polite small talk with him although he seemed distinctly taciturn, if not downright moody.
- She was taciturn and almost melancholic; her parents had raised her on stories of hardship.
- The Raika were in trouble and when it came to articulating their misfortunes these normally taciturn men became eloquent.
- They were met at the door by a mercifully taciturn priest, who escorted them without fuss to their quarters.
THESAURUSnot saying much► quiet
speaking very little, so that you seem unfriendly → monosyllabic► see thesaurus at quiet—taciturnity /ˌtæsəˈtɜːnəti $ -ɜːr-/ noun [uncountable] not saying much: · He’s a quiet boy who loves reading.· You’re very quiet tonight, Suzy – are you OK?
► silent not saying anything: · Her husband was a big silent man.· Everyone was arguing but I decided to remain silent.
► taciturn formal not talking much and seeming a little unfriendly or bad-tempered: · He found Vaughn a taciturn and rather difficult person.
► reticent unwilling to talk to other people, especially about a particular subject: · She’s always been reticent about her early life.
► a man/woman of few words someone who does not talk much, especially because they only speak when there is something important to say: · My father was a man of few words, but when he spoke everyone listened.
Longman Language Activatorsomeone who does not talk much► quiet someone who is quiet does not talk much. Quiet can be used generally about someone's character, or about a particular situation in which someone does not talk: · The new girl's quiet, but nice enough.· Steven's a very quiet boy who loves reading.· Tyrell was quiet early in the evening, but as he got to know us, he really opened up.
► silent written if someone is silent , they do not say anything. Silent is used before the noun if you are talking about someone's general character, and after the verb if you are talking about a particular situation: · Mrs. Welland was a mild silent woman with no strong opinions.be/remain/stay silent: · Alice was laughing and joking, but her sister remained silent.
► taciturn formal someone who is taciturn usually does not talk much, so that they may seem a little unfriendly or bad-tempered: · The ship's captain was a taciturn man who spoke only to give orders.· It was unlike her to be so taciturn - she must have had something on her mind.
► a man/woman of few words someone who usually does not talk much, because they only speak when there is something important to say: · My father was a man of few words, but when he spoke everyone listened.· Neighbors remember her as a woman of few words whom everyone respected.
► reticent unwilling to talk to other people or unwilling to talk about a particular subject: · Irma was a shy and reticent child.reticent about: · Auster was somewhat reticent about it at first, but finally admitted he was working on a new book.