"More high brow" can be replaced with several synonyms that signify sophistication and refinement. One such term is "more cultured," which denotes involvement in the arts and intellectual pursuits. Another would be "more elevated," signifying intellectual or artistic performance above the norm. "More refined" can be used to describe something that is sophisticated, elegant, and precise. "More urbane" indicates an inclination towards the sophistication, polish, and worldliness of cities. Finally, "more intellectual" suggests a deep intellectual understanding that is characterized by analytical rigor and an appreciation of the finer things in life. By employing these synonyms in place of "more high brow," we can communicate a similar meaning with fresh language and subtle connotations.