temperance or moderation, especially in the use of alcoholic beverages.
3.
seriousness, gravity, or solemnity: an event marked by sobriety.
Origin: 1375–1425; late Middle English sobrietie (< Old French sobriete) < Latin sōbrietās, equivalent to sōbri(us) sober + -etās, variant of -itās-ity after vowel stems