usageaster \YOO-sij-as-ter\,
noun: A self-styled authority on language usage.
Newman went on to voice sentiments held by other usageasters: I think that slang adds richness and originality to English.
-- Charlton Grant Laird and Phillip C. Boardman, "The Legacy of Language"
A poetaster pretends to write poetry; a usageaster pretends to know about questions of usage in language.
-- Allan A. Metcalf, "Predicting New Words"
Usageaster is derived from the word usage and the suffix -aster which refers to something that imperfectly resembles or mimics the true thing.
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