The word "complanate" means flattened or levelled. So, the antonyms of "more complanate" will be the words that refer to uneven, rough or rugged surfaces. For instance, the terms 'uneven, indented, bumpy, rough, mountainous, hilly, and jagged' are perfect antonyms for "more complanate". These terms describe terrain, landscape or surface that is the opposite of flat or leveled. On the other hand, the term "more" indicates an increased degree of complanate. Therefore, the antonyms will indicate a lower level or degree of flatness. A landscaping project could require an understanding of these antonyms to create a complementary terrain that incorporates both complex and compliant surfaces.