Antonyms for the word "generative capacities" refer to the inability or lack of capability to create, produce, or generate. These antonyms could be words such as unproductive, uncreative, sterile, barren, or stagnant. Unproductive refers to the absence of productive ability or the inability to produce or generate results. Uncreative indicates the lack of creativity, imagination, or originality. Sterile refers to a lack of ability to produce viable offspring or barrenness. Barren describes the inability to produce or bear fruit, offspring, or any creative work. Finally, stagnant refers to the lack of movement or growth, which hinders the ability to generate, produce, or create.