The word "more aesthetic" refers to something that is visually pleasing or beautiful. However, there are several antonyms that describe the opposite of this quality. For instance, "ugly" is a common antonym for "aesthetic." Something that is unattractive, unpleasant, or unsightly can also be considered an antonym. Likewise, "clumsy" or "awkward" can be employed as antonyms for "more aesthetic" since they denote a lack of grace or elegance. Additionally, words such as "gaudy," "garish," or "tacky" can be used as antonyms, indicating that something is overly showy or lacking in refinement.