The word 失去 is formed through the logical combination of two conceptual characters: 失, which carries the core meaning of "to lose", "to miss", or "to err", and 去, which means "to go away" or "to depart". Their union does not create a simple list of actions but fuses into a single, more vivid concept. Together, they pictorially and notionally depict the process where something slips from one's grasp and then moves away into absence, thus fully encapsulating the idea of "to lose" as in something leaving one's possession or state.