Definitions by S. D.

wallah 

A shortened, slang term for "Waheyat Allah," which means "I swear to God" in Arabic. Arab and non-Arab teens in America use this word commonly.

Bilal: Dude, I saw those two guys fight!

Albert: Are you serious?

Bilal: Wallah, bro.

wallah by S. D. May 8, 2005