- not bright; somewhat dark
- not clear or distinct in character; lacking definition, distinction, strength, etc.
- without luster; dull
- not clearly seen, heard, perceived, or understood; vague
- not clearly seeing, hearing, understanding, etc.
- not likely to turn out well: dim prospects
- Informal lacking intelligence; stupid
Origin of dimMiddle English from OE, akin to Old Norse dimmr, dark from Indo-European base an unverified form dhem-, to be dusty, misty from source damp, German dunkel, dark
transitive verbdimmed, dim′ming
- to make dim
- to make seem dim, as by comparison
- to turn (headlights) down by switching from high to low beam
- Archaic dim light; dimness; dusk
- [pl.] headlights on a low-beam setting
take a dim view of