—adj. (dimmer, dimmest)
1 a only faintly luminous or visible; not bright. b obscure; ill-defined.
2 not clearly perceived or remembered.
3 colloq. stupid; slow to understand.
4 (of the eyes) not seeing clearly.
—v. (dimmed, dimming)
1 tr. & intr. make or become dim or less bright.
2 tr. US dip (headlights).
Phrases and idioms:
dim-wit colloq. a stupid person. dim-witted colloq. stupid, unintelligent. take a dim view of colloq.
1 disapprove of.
2 feel gloomy about.
Derivatives:
dimly adv. dimmish adj. dimness n.
Etymology: OE dim, dimm, of unkn. orig.
Useful english dictionary. 2012.