Un-varnished refers to something that is plain, straightforward, and honest. Antonyms for un-varnished include embellished, polished, refined, sophisticated, and ornate. Embellished refers to something that is decorated or enhanced with added details. Polished indicates something that is smooth, shiny, and well-finished. Refined implies something that is cultured, polished, and has sophisticated manners. Sophisticated indicates something that is complex and intellectually developed. Ornate refers to something that is highly decorated and intricate. These antonyms for un-varnished imply a degree of artifice or elaboration that is lacking from something that is un-varnished.