Aggrandization refers to the act of increasing in size, power, or reputation. Therefore, the antonyms of aggrandization are words that represent reduction, diminution, or decline in status, importance, or size. Some of the antonyms of aggrandization include diminishment, degradation, belittlement, debasement, devaluation, and demotion. Diminishment refers to the reduction of importance, size, or quantity, while degradation represents a reduction in social status, worth, or value. Belittlement, on the other hand, involves making something seem less important than it actually is. Debasement refers to the reduction in quality or value, and demotion represents a reduction in rank or position. Overall, these antonyms of aggrandization emphasize the opposite of increasing or expanding.