taciturn

 
Pronunciation: /ˈtasɪtəːn/

adjective

  • (of a person) reserved or uncommunicative in speech; saying little: after such gatherings she would be taciturn and morose

Derivatives

taciturnity

Pronunciation: /-ˈtəːnɪti/
noun

taciturnly

adverb

Origin:

late 18th century: from Latin taciturnus, from tacitus (see tacit)