jumped up
/ˈdʒʌmpt ʌp/
adjective
- Behaving as if one is more important than one really is; arrogant or self-important.
- He's a jumped-up little official who loves to boss people around.
- The jumped-up manager acted like he owned the company, even though he was just a temp.
- I can't stand those jumped-up celebrities who think they're better than everyone else.