In a dusky manner; in a dim or shadowy way; with a twilight-like quality or darkness.
From 'dusky' plus the adverb-forming suffix '-ly,' creating an adverb that describes how something happens in a dusky manner, following standard English patterns.
Poets use 'duskily' to describe how light appears or how characters move through twilight scenes—it's an elegant alternative to 'darkly' that captures not just darkness but the specific aesthetic of dusk.
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