so·bri·e·ty 
(sə-brīĭ-tē, sō-)
(sə-brīĭ-tē, sō-)n.
The state or condition of being sober: "three years of drug-free sobriety" (Ron Rosenbaum). See Synonyms at abstinence.
[Middle English sobriete, from Old French, from Latin sōbrietās, from sōbrius, sober; see SOBER.]