Examples of using "серьёзны" in a sentence and their english translations:
Be serious.
- Are you joking, or are you serious?
- Are you kidding, or are you serious?
- Are you joking or are you serious?
We have to be serious.
Our financial problems are serious.
How serious are these threats?
Don't think we're always serious.
Don't think we're always serious.
- Get serious.
- Get serious!
- You're not serious.
- You aren't serious.
Please be serious.
- Get serious.
- Be serious.