sober -- (cause to become sober; "A sobering thought")
sober up, sober -- (become more realistic; "After thinking about the potential consequences of his plan, he sobered up")
sober up, sober -- (become sober after excessive alcohol consumption; "Keep him in bed until he sobers up")
Overview of adj sober
The adj sober has 4 senses
sober -- (not affected by a chemical substance (especially alcohol))
grave, sedate, sober, solemn -- (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")
drab, sober, somber, sombre -- (lacking brightness or color; dull; "drab faded curtains"; "sober Puritan grey"; "children in somber brown clothes")
unplayful, serious, sober -- (completely lacking in playfulness)