The term 'more mosaic' essentially means a greater level of intricacy, diversity, or variety. Antonyms for it would therefore involve simpler or less complex expressions. Some antonyms for the word 'more mosaic' could be 'plain,' 'monochromatic,' 'homogeneous,' 'singular,' 'uniform,' 'identical' or 'identikit.' All of these words suggest a lack of diversity, variety, or complexity. In contrast, 'more mosaic' describes a situation where each fragment is unique and contributes to the overall picture. It brings to mind the idea of a rich, multi-layered tapestry with a wealth of details and patterns.