Sade, pronounced as Sa-Dey (also pronounced as Sha-dey and Sey-dey) is a slang word used by the youth in Bangalore,
India to (usually) point out a person who arouses anger by his (
immature) acts. The word has gained popularity in the recent past and it has no distinct
definition.
1) It can be used in a variety of situations to express displeasure/annoyance.
2) It can be used to greet/address a close friend.