Sôber
WordNet
adjective
(1) Lacking brightness or color; dull
"Drab faded curtains"
"Sober Puritan grey"
"Children in somber brown clothes"
(2) Not affected by a chemical substance (especially alcohol)
(3) Dignified and somber in manner or character and committed to keeping promises
"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"
(4) Completely lacking in playfulness
verb
(5) Become sober after excessive alcohol consumption
"Keep him in bed until he sobers up"
(6) Become more realistic
"After thinking about the potential consequences of his plan, he sobered up"
(7) Cause to become sober
"A sobering thought"