In a manner that involves bending or curving; with flexibility or pliability.
From 'bending' (present participle of 'bend') plus the adverbial suffix '-ly' (from Old English, meaning 'in the manner of'). Rare literary or technical term.
Adverbs ending in '-ingly' are rare and often poetic—'bendingly' sounds archaic precisely because it's so specific about manner that modern speakers prefer simpler alternatives!
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