In a manner that promotes healing or recovery; in a way that is therapeutic or curative.
From 'heal' plus '-ing' (present participle) plus '-ly' (adverb suffix). An adverbial form rarely encountered in modern English but grammatically sound and used in poetic or medical texts.
Words like 'healingly' reveal how English can create new adverbs on the fly from any verb—you could say someone spoke 'healingly' or sang 'healingly' even if the exact phrase is rare!
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