Lewis & Short

sōbrĭĕtas, ātis, f. [sobrius], sobriety (post-Aug.).

  1. I. Lit., temperance in drinking, Sen. Tranq. 15, 16; Val. Max. 6, 3, 9.
    Hence Sobrietas personified, the enemy of Venus, App. M. 5, p. 172, 20; Prud. Psych. 450.
  2. II. In gen., moderation, temperance, continence (cf.: modestas, temperantia): vitae, Dig. 1, 7, 17 fin.; Vulg. 1 Tim. 2, 9.
    1. B. Trop., reasonableness, prudence: consiliorum, Amm. 31, 10, 19.