In a frilly, decorative, or elaborately ornamented manner; with frills or in a showy way.
Derived from 'frilly' + the adverb suffix '-ly.' Created to convert the adjective 'frilly' into an adverb describing how something is done.
The '-ly' suffix is one of English's most productive tools—you can add it to almost any adjective to create an adverb, and native speakers instantly understand it. This is why English speakers can create new adverbs on the fly without ever looking them up.
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