1580s, "one who passes judgment," from Middle French critique (14c.), from Latin criticus "a judge, literary critic," from Greek kritikos "able to make judgments," from krinein "to separate, decide" (see crisis). Meaning "one who judges merits of books, plays, etc." is from c.1600. The English 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]