Sober up phrasal verb
To become less drunk, or help someone to be less drunk.
If you want to go home yourself, you need to sober up first.
You drank a lot last night. Let's drink this ginger congee, it can sober you up.
To become serious or make someone become serious.
This is a serious case and we need you to really sober up when investigating it.
When Tom is almost nodding off, the teacher's calling sobers him up.
If you sober up, you quit drinking alcohol or taking drugs to help you overcome your addiction.
1. To be philosophical and shy.
2. To be cool and reasonable.
3. To be not inebriated at all.
It's mostly used in the present tense.