The word "早日" is a temporal adverbial phrase formed by combining the independent morpheme "早" (zǎo), meaning "early" or "morning," with "日" (rì), meaning "day." Literally, it translates to "early day," but its formation follows a common pattern in Chinese where two time-related characters are compounded to create an adverb expressing a specific time concept. In usage, it functions idiomatically to mean "at an early date," "soon," or "promptly," and is most frequently employed in well-wishing contexts (e.g., 祝你早日康复 — "I wish you a speedy recovery") to express a hope that a desired event or state will be realized in the near future.