The Vocalibrate dictionary

taciturn

/ˈtæsɪˌtɝːn/adjective

habitually quiet; inclined to say very little

My taciturn grandfather rarely spoke more than a few words at dinner.

Near in meaning: reservedreticentuncommunicativequiet
In the family: taciturnitytaciturnly

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triteused so often that it seems dull and unoriginal speciousseemingly right or true but actually false fallowplowed but left without crops for a season so the soil can recover tacitunderstood without being openly stated peripateticon the move, never staying long in one place petulantsulky and bad-tempered, like a spoiled child