Word Origin & History
mere (adj.)
c.1400, "unmixed," from O.Fr. mier "pure, entire," from L. merus "unmixed, pure, bare," used of wine, probably originally "clear, bright," from PIE *mer- "to gleam, glimmer, sparkle" (cf. O.E. amerian "to purify," O.Ir. emer "not clear," Skt. maricih "ray, beam," Gk. marmarein "to gleam, glimmer"). Original sense of "nothing less than, absolute" (1536, now only in vestiges such as mere folly) existed for centuries alongside opposite sense of "nothing more than" (1581, e.g. a mere dream).