The word "不祥" is formed through a straightforward morphological process in Chinese, combining the negative prefix "不" (bù), meaning "not," with the core character "祥" (xiáng), which means "auspicious," "propitious," or "lucky." This creates a compound adjective with a directly opposite meaning, resulting in the definition "inauspicious," "ominous," or "unlucky." It exemplifies a common word-formation pattern where "不" is prefixed to an adjective to negate its quality, and the resulting term is used to describe signs,预感 (premonitions), or events that portend bad fortune.