In a way that is extremely sad, lonely, or emotionally devastating; in a manner that causes deep feelings of abandonment.
From 'desolating' (adjective) plus the adverbial suffix '-ly'. This adverb modifies verbs and adjectives to show the desolating quality of actions or states.
Adding '-ly' to 'desolating' creates an adverb that can describe how an action is performed—like 'the wind blew desolatingly through the empty streets,' giving movement to emptiness.
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