What is the meaning of sober?

verb

• Cause to become sober.
  • usage: "A sobering thought"
• Become more realistic.
  • usage: "After thinking about the potential consequences of his plan, he sobered up"
  • synonyms: sober up
• Become sober after excessive alcohol consumption.
  • usage: "Keep him in bed until he sobers up"
  • synonyms: sober up

adjective

• Not affected by a chemical substance (especially alcohol. )
• Dignified and somber in manner or character and committed to keeping promises.
  • usage: "a grave God-fearing man"; "a quiet sedate nature"; "as sober as a judge"; "a solemn promise"; "the judge was solemn as he pronounced sentence"
  • synonyms: grave, sedate, solemn
• Lacking brightness or color; dull.
  • usage: "drab faded curtains"; "sober Puritan grey"; "children in somber brown clothes"
  • synonyms: drab, somber, sombre
• Completely lacking in playfulness.
  • synonyms: unplayful, serious