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“a suffix which forms nouns that refer to people who regularly engage in some activity”
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“a suffix which forms nouns that refer to people who regularly engage in some activity”
(a suffix which forms nouns that refer to people who regularly engage in some activity, or who are characterized in a certain way, as indicated by the stem or root of the word; originally, which appeared in Middle English in words from Old French where it expressed an intensive degree or with a pejorative or disparaging application)