In a somewhat dusky or darkish manner; rather dimly or with a twilight-like quality.
From 'duskish' plus the adverb-forming suffix '-ly,' creating an adverb that describes doing something in a somewhat dusky manner.
Stacking '-ish' and '-ly' together ('duskishly') creates a wonderfully vague, imprecise quality—perfect for describing something that's ambiguously between light and dark.
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