A rare or obsolete adverb, likely a variant of 'crudely' or 'cruelly,' meaning in a rough, crude, or harsh manner.
Possibly derived from 'crude' (Latin 'crudus,' meaning raw or uncooked) with the adverbial suffix '-ly', or confused with 'cruelly'.
Old English had hundreds of adverbs like this that disappeared—they're fossils in historical texts that show us how speakers experimented with word formation before standardized grammar rules!
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