a person who judges, evaluates, or criticizes: a poor critic of men.
2.
a person who judges, evaluates, or analyzes literary or artistic works, dramatic or musical performances, or the like, especially for a newspaper or magazine.
3.
a person who tends too readily to make captious, trivial, or harsh judgments; faultfinder.
1580s, from L. criticus, from Gk. kritikos "able to make judgments," from krinein "to separate, decide" (see crisis). The Eng. word always had overtones of "censurer, faultfinder."
"A perfect judge will read each work of wit With the same spirit that its author writ;" [Pope, "An Essay on Criticism," 1709]