Describes a person who thinks he is superior in some way that the speaker disagrees with. For instance, of a higher class, or has more authority than they have in reality
We're doomed if this wee jumped-up monkey gets Gordon Smith's blessing.
disapproval If you describe someone as jumped-up, you disapprove of them because they consider themselves to be more important than they really are. He's nothing better than a jumped-up bank clerk!. a jumped-up person thinks they are more important than they really are, because they have improved their social position