The word 不利 is formed by directly combining two characters: 不 (bù), which means "not", and 利 (lì), which means "beneficial", "advantageous", or "sharp". The formation is purely conceptual, where the first character negates the meaning of the second, resulting in a single compound idea that means "not beneficial", "unfavorable", or "disadvantageous". It is a logical fusion where the inherent meaning of one component reverses the inherent meaning of the other to create a new, unified concept.