In a cumbersome manner; in a way that is bulky, awkward, heavy, or makes progress difficult.
From 'cumbersome' (adjective, from 'cumber' + '-some') with the adverb suffix '-ly'. Evolved from Middle English as a way to describe how an action is performed with impediment.
Adding '-ly' to an adjective turns it into an adverb describing how something happens—'cumbersome' is what something IS, while 'cumbersomely' is HOW it moves or operates, a linguistic distinction that helped English become precise.
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