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1. Dignified and sombre in manner or character and committed to keeping promises
   "as sober as a judge";
   - grave, sedate, solemn
    
2. Lacking brightness or colour; dull
   "sober Puritan grey";
   - drab, somber [US], sombre [Brit, Cdn]
    
3. Not affected by a chemical substance (especially alcohol)
    
4. Completely lacking in playfulness
   - unplayful, serious

1. Cause to become sober
   "A sobering thought"
    
2. Become more realistic
   "After thinking about the potential consequences of his plan, he sobered up";
   - sober up
    
3. Become sober after excessive alcohol consumption
   "Keep him in bed until he sobers up";
   - sober up

Derived forms: sobered, sobering, sobers, soberer, soberest

See also: cold sober, colorless [US], colourless [Brit, Cdn], drug-free, dry, fun, playfulness, serious, stone-sober, teetotal, uninebriated, unintoxicated

Type of: alter, become, change, get, go, modify

Antonym: intoxicated

Encyclopedia: Sober, Spain