What does "sober up" mean?

To become sober; to cause to become sober (usually in terms of alcohol or drugs; sometimes figuratively).

What is a synonym for "sober up"?

Common synonyms include: sober.

verb

verb ·Rare ·Advanced level

Verb

1
To become sober; to cause to become sober (usually in terms of alcohol or drugs; sometimes figuratively).
"She's in no state to go home by herself, so make sure she doesn't drink anything else, and she'll soon sober up."
2
become sober after excessive alcohol consumption wordnet
3
become more realistic wordnet

"She's in no state to go home by herself, so make sure she doesn't drink anything else, and she'll soon sober up."