TACITURN Meaning of TACITURN in English [ 'tasɪtə:n ]■ adjective reserved or uncommunicative in speech; saying little.Derivatives~ity noun~ly adverb OriginC18: from L. ~us , from tacitus (see tacit ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004