Green’s Dictionary of Slang

1. a star, an important figure.

1997–2000

College Sl. Research Project (Cal. State Poly. Uni., Pomona) 🌐 Supa (noun) A man that does it all and makes it look easy.

2. thus a form of respectful address.

1992

V. Headley Yardie 34: Hold on, supa.