This study delved deep into the complex and intricate nature of integrative complexity within Indonesian morphology. The research employed a comprehensive morphosyntax analysis, utilizing corpus data, qualitatives methodologies, and empirical observations to examine the structural interconnections and multifaceted elements that shaped the morphological framework of the Indonesian language. The investigation aimed to unveil the nuanced patterns and layered structures that contributed to the integrative complexity of Indonesian morphology through a thorough examination of the language's morphological processes. The findings showed (1) that the Indonesian language utilized a diverse range of affixes, such as prefixes, suffixes, infixes, and circumfixes, each contributing uniquely to the grammatical and semantic nuances of words; (2) the intricate interplay between full, partial, and iterative reduplication highlighted its crucial role as a significant contributor to the integrative complexity within Indonesian morphology, and (3) the syntactic configurations in Indonesian interacted harmoniously with affixation, reduplication, and other morphological components, thereby uniquely shaping the integrative complexity within Indonesian morphology. These findings helped shed light on the rich and diverse linguistic landscape of Indonesian morphology, offering valuable insights into the complex nature of morphological processes. This study contributed to linguistics, highlighting the importance of integrative complexity and its role in shaping the linguistic landscape of Indonesian morphology.