- An expression of surprise.
"Oi! This is new!"
- Alternative spelling of oy
- A protest or reprimand.
"Oi! Stop that!"
- Said to get someone's attention; hey.
"Oi, you with the red hat – stop doing that!"
- An informal greeting, similar to hi.
"Oi! How's it going?"
- (Britain, sometimes capitalized) A working-class punk rock subgenre of the 1970s, sometimes associated with racism.