(superl.) Temperate in the use of spirituous liquors; habitually
temperate; as, a sober man.
(superl.) Not intoxicated or excited by spirituous liquors; as,
the sot may at times be sober.
(superl.) Not mad or insane; not wild, visionary, or heated with
passion; exercising cool, dispassionate reason; self-controlled;
self-possessed.
(superl.) Not proceeding from, or attended with, passion; calm;
as, sober judgment; a man in his sober senses.
(superl.) Serious or subdued in demeanor, habit, appearance, or
color; solemn; grave; sedate.
(v. t.) To make sober.
(v. i.) To become sober; -- often with down.