The word 脱光 is formed through a vivid conceptual metaphor that begins with the literal action of 脱 (to take off or shed) and intensifies it with 光 (meaning bare, naked, or completely gone). It visually conjures the image of stripping something away until nothing remains, fully exposed or entirely removed. This concrete idea of becoming physically bare is then extended to abstract situations, such as revealing a secret, being left with no resources, or the state of being unmarried, by applying the same core notion of complete removal or exposure to those different contexts. The term's formation is essentially a compact, imaginative leap from a physical action to a broader state of totality or finality.