sidey

adjective2

1. •
   (India) Insignificant; small-time.
2. •
   (informal, old-fashioned) Exhibiting side, or unjustified self-importance; arrogant.

   • "And besides," said the Superior suddenly, "you're too sidey, young man. Calling yourself The Civilian! People won't like that. It's sidey. It'll annoy them. It's uppish." — 1921