In an ennobling manner; in a way that elevates character, dignity, or moral worth.
From 'ennobling' (present participle of 'ennoble') + the adverbial suffix '-ly', following the standard pattern for creating adverbs from adjectives in English.
This is an extremely rare adverb that appears almost exclusively in old-fashioned or highly formal prose—you'd read that something 'ennoblingly elevates the spirit' in Victorian philosophy texts, but modern writers would probably just say 'in an ennobling way' instead.
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