a severe critic.
doubter, complainant, complainer, quibbler, caviler, censor, nitpicker, carper, zapper, muckraker, disparager, maligner, slanderer, worrier, nagger, faultfinder, niggler, criticizer, censurer, fretter
Origin of aristarch
1615–25; after Aristarchus of Samothrace, who, in editing Homer, rejected many lines as spurious interpolations
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019