From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( superl.) Not intoxicated or excited by spirituous liquors; as, the sot may at times be sober.

(2): ( superl.) Temperate in the use of spirituous liquors; habitually temperate; as, a sober man.

(3): ( superl.) Not proceeding from, or attended with, passion; calm; as, sober judgment; a man in his sober senses.

(4): ( superl.) Serious or subdued in demeanor, habit, appearance, or color; solemn; grave; sedate.

(5): ( superl.) Not mad or insane; not wild, visionary, or heated with passion; exercising cool, dispassionate reason; self-controlled; self-possessed.

(6): ( v. t.) To make sober.

(7): ( v. i.) To become sober; - often with down.

King James Dictionary [2]

SO'BER, a. L. sobrius.

1. Temperate in the use of spiritous liquors habitually temperate as a sober man. Live a sober, righteous and godly life. 2. Not intoxicated or overpowered by spiritous liquors not drunken. The sot may at times be sober. 3. Not mad or insane not wild, visionary or heated with passion having the regular exercise of cool dispassionate reason. There was not a sober person to be had all was tempestuous and blustering. Not sober man would put himself in danger, for the applause of escaping without breaking his neck. 4. Regular calm not under the influence of passion as sober judgment a man in his sober senses. 5. Serious solemn grave as the sober livery of autumn. What parts gay France from sober Spain? See her sober over a sampler, or gay over a jointed baby.

SO'BER, TO make sober to cure of intoxication. There shallow draughts intoxicate the brain and drinking largely sobers us again.

Holman Bible Dictionary [3]

 1 Thessalonians 5:8 1 Timothy 3:11 Titus 1:8 Titus 2:2 2:6 1 Peter 1:13 1 Peter 5:8 2 Corinthians 5:13