The word 多多 is formed through the process of reduplication, where the single-character adjective 多 (duō), meaning "many" or "much", is repeated to create a new disyllabic word. This specific AA-pattern reduplication intensifies the original meaning, transforming it into an adverb conveying "a lot", "plentifully", or "in great quantity", and it is most commonly used in polite or exhortative expressions, most famously in the set phrase 请多多指教 (qǐng duōduō zhǐjiào, "please give me much guidance").