In a way that deceives or misleads; with the quality of being deluding or deceptive.
From 'delude' (to deceive) + '-ing' (present participle form) + '-ly' (adverb marker). Standard adverbial formation from the verb.
Adverbs like 'deludingly' are rare in modern English because we typically use 'deceptively' or 'misleadingly' instead—showing how English speakers sometimes abandon longer forms for shorter, punchier alternatives!
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