taciturn
ta·ci·turn
adjective
1.
habitually reserved and uncommunicative
Origin
Back-formation from taciturnity, from Middle English taciturnite, from Latin taciturnitās; or alternatively from French taciturne, likely reinforced by Latin taciturnus, from tacitus (“secret, tacit”).
Related words
Word family
See also
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.