We know what au revoir means--"until the again seeing". And auf wiedersehn (same thing). And goodbye--"God be with ye". But what does sayonara mean?
Well, sa means something like "thus" and yo means "like this." Nara is a suffix indicating uncertainty, so here something like "maybe."
Run it all together and sayonara means "If that's the way it has to be…"
- Zeke Suzuki