sober

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Habitually abstemious in the use of alcoholic liquors or drugs; temperate.
2. adj. Not intoxicated or affected by the use of drugs.
3. adj. Plain or subdued: sober attire.
4. adj. Devoid of frivolity, excess, exaggeration, or speculative imagination; straightforward: gave a sober assessment of the situation.
5. adj. Marked by seriousness, gravity, or solemnity of conduct or character. See Synonyms at serious.
6. adj. Marked by circumspection and self-restraint.
7. v. To make or become sober.

Century Dictionary and Cyclopedia

1. Free from the influence of intoxicating liquors; not drunk; unintoxicated.
2. Habitually temperate in the use of liquor; not given to the use of strong or much drink.
3. Temperate in general character or habit; free from excess; avoiding extremes; moderate.
4. Guided or tempered by reason; rational; sensible; sane; sound; dispassionate; commonplace.
5. Free from violence or tumult: serene; calm; tranquil; self-controlled.
6. Modest; demure; sedate; staid; dignified; serious; grave; solemn.
7. Plain or simple in color; somber; dull.
8. Little; small; mean; poor; weak.
9. = Syn. 3–5. Cool, collected, unimpassioned, steady, staid, somber. Sober differs from the words compared under grave in expressing the absence of exhilaration or excitement, whether physical, mental, or spiritual, whether beneficial or harmful.
10. To make sober; free from intoxication.
11. To mitigate; assuage; soften; restrain.
12. To make serious, grave, or sad: often followed by down.
13. To become sober, in any sense of the word. Especially— To recover from intoxication: generally with up.

Wiktionary

1. adj. not drunk; not intoxicated
2. adj. not given to excessive drinking of alcohol;
3. adj. in character; moderate; realistic; serious; not playful; not passionate; cool; self-controlled
4. adj. dull; not bright or colorful;
5. v. To make or become sober.
6. v. To overcome or lose a state of intoxication.

GNU Webster's 1913

1. adj. Temperate in the use of spirituous liquors; habitually temperate.
2. adj. Not intoxicated or excited by spirituous liquors.
3. adj. Not mad or insane; not wild, visionary, or heated with passion; exercising cool, dispassionate reason; self-controlled; self-possessed.
4. adj. Not proceeding from, or attended with, passion; calm.
5. adj. Serious or subdued in demeanor, habit, appearance, or color; solemn; grave; sedate.
6. v. To make sober.
7. v. To become sober; -- often with down.

WordNet 3.0

1. adj. completely lacking in playfulness
2. v. become sober after excessive alcohol consumption
3. v. cause to become sober
4. v. become more realistic
5. adj. not affected by a chemical substance (especially alcohol)
6. adj. lacking brightness or color; dull.
7. adj. dignified and somber in manner or character and committed to keeping promises