DIM
—adjective. (dimmer, dimmest) 1 a faintly luminous or visible; not bright. B indistinct. 2 not clearly perceived or remembered. 3 colloq. Stupid. 4 (of the eyes) not seeing clearly. —verb. (-mm-) make or become dim. ? take a dim view of colloq. Disapprove of. ? dimly adverb. Dimness none. [old english]