stilski

1. stylistic
   U tekstu ima nekoliko stilskih grešaka. — There are several stylistic errors in the text.
   Metafora je najpoznatija stilska figura. — Metaphor is the best-known figure of speech.
2. (of furniture, interiors) period; antique-style
   Kupili su stilski nameštaj za dnevnu sobu. — They bought period furniture for the living room.

It does not mean 'stylish'; for that use moderan or elegantan.