The Chinese word 恰巧 (qiàqiǎo) is a compound adverb formed through the combination of two independent, synonymous morphemes: 恰 (qià), meaning "exactly" or "precisely," and 巧 (qiǎo), meaning "coincidental," "opportunely," or "by chance." Their semantic fusion creates a single lexical unit that intensifies the notion of a fortuitous coincidence, meaning "by a happy coincidence," "as luck would have it," or "exactly at the right moment." This pattern of compounding, where two characters with closely related meanings are paired to form a word with a reinforced or more precise nuance, is a common and productive method of word formation in Chinese.