The Chinese word 遗漏 (yílòu), meaning "to omit" or "to leave out", is a compound formed by combining two characters with semantically related meanings. The first character, 遗 (yí), carries the core ideas of "to leave behind", "to lose", or "to omit". The second character, 漏 (lòu), means "to leak", "to seep", or "to be missing". When combined, they create a metaphorical and reinforced concept where an omission is likened to something slipping through or leaking away from a set or list, thus vividly expressing the act of inadvertently failing to include something.