Taciturn

прилагательное молчаливый; неразговорчивый Синоним(ы): close, reticent, secretive, uncommunicative Антоним(ы): communicative, talkative

Большой англо-русский словарь

Taciturn

adjective Etymology: French or Latin; French taciturne, from Middle French, from Latin taciturnus, from tacitus temperamentally disinclined to talk Synonyms: see silenttaciturnity noun

Merriam-Webster's Collegiate Dictionary