ekskluzivno

1. exclusively
   Intervju je objavljen ekskluzivno na našem portalu. — The interview was published exclusively on our website.
   Ovaj model se prodaje ekskluzivno u Srbiji. — This model is sold exclusively in Serbia.
2. luxuriously; upscale
   Stan je ekskluzivno opremljen i ima pogled na reku. — The flat is luxuriously furnished and overlooks the river.

In the sense of "only", neutral speech more often uses "isključivo".