Definition of sober

• 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.