The word 好多 is formed through the direct combination of two independent, meaningful characters: 好 (hǎo), which carries the core meaning of "good" or, in this context, acts as an intensifier meaning "very", and 多 (duō), which means "many" or "much". Their formation is a straightforward, additive compounding where the first element modifies and amplifies the second, creating a new unified concept that means "a great many" or "very much", emphasizing a large quantity.