The word "不巧" is formed through a straightforward compound morphological process, combining the negative adverb "不" (bù), meaning "not," with the adjective "巧" (qiǎo), which denotes "coincidental," "opportune," or "skillful." In this specific combination, "巧" carries the sense of a fortunate or timely coincidence, so the literal construction negates that idea to mean "unfortunately," "by chance," or "as luck would have it," often used to describe an event that is inconveniently timed or an unlucky happenstance. This formation follows the common Chinese syntactic pattern where a modifier (不) is placed directly before the root word (巧) to create a new, integrated lexical unit with a meaning derived from the sum of its parts.