Infested with or resembling fleas; flea-like in appearance or behavior.
From Old English 'fleah' (flea) with the diminutive or descriptive suffix '-y', creating an adjective meaning 'full of fleas' or 'resembling fleas.'
The suffix '-y' is one of English's most productive tools for turning nouns into adjectives—you can add it to almost anything to mean 'full of' or 'like,' which is why it appears in hundreds of colorful words like 'dusty,' 'thorny,' and 'fleay.'
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