In a frowzy manner; in a way that is unkempt or musty.
From frowzy plus the adverbial suffix -ly. This adverb form allows the descriptor to modify verbs and other adjectives, creating more nuanced descriptions of untidy behavior or appearance.
Though rarely used today, 'frowzly' is a gem for describing how someone moves or acts when they're deeply disheveled—it's the difference between looking messy (frowzy) and acting messy (frowzly).
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