#1 sobriety n. [soberness] the state of being sober and not intoxicated by alcohol. wn #2 sobriety n. [dryness] moderation in or abstinence from alcohol or other drugs. wn #3 sobriety n. [graveness, gravity, soberness, somberness, sombreness] a manner that is serious and solemn. wn #4 sobriety n. [temperance] abstaining from excess. wn