In a manner characteristic of a fop; with excessive attention to appearance and fashion in a foolish way.
From fop + -erly (archaic adverbial suffix). Fop comes from Middle English, possibly from Old English, meaning a foolish person, later specialized to mean a man excessively concerned with his appearance. The -erly suffix is an older form of -erly/-ly used in archaic English.
This word is a linguistic fossil—fopperly shows us how English had multiple ways to form adverbs before -ly became standardized. It's like watching how languages experiment with different grammatical endings before settling on winners.
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