Definition from Wiktionary, the free dictionary
Fanciful extension of up.
- Presumptuous, above oneself, self-important; arrogant, snobbish, haughty.
- Exceeding one's station or position (see usage note below for one example), assuming prerogatives to which one is not entitled.
- Be careful about using this in interracial situations: White Americans have used this to describe black people whom they considered not submissive and subservient enough.
Presumptuous, above oneself