The word 认输 is formed through a direct and intuitive conceptual fusion of its two component characters. The first character, 认, carries the core idea of "recognizing" or "acknowledging" a reality. The second, 输, fundamentally means "to lose" or "to be defeated". When combined, they create a new, cohesive concept that is greater than the sum of its parts: the conscious mental act of acknowledging that one is losing, which naturally translates to the single idea of "to admit defeat" or "to concede". It is a logical, cause-and-effect compound where the recognition (认) directly applies to the state of loss (输), forming a complete narrative of surrender in one's mind.