From Middle English dim, dym, from Old English dim, dimm (“dim, dark, gloomy; wretched, grievous, sad, unhappy”), from Proto-Germanic *dimmaz (“dark”), from Proto-Indo-European *dʰem- (“to whisk, smoke, blow; dust, haze, cloud; obscure”). Compare Faroese dimmur, Icelandic dimmur (“dark”) and dimma (“darkness”).
dim (comparative dimmer, superlative dimmest)
- Not bright or colorful.
- (colloquial) Not smart or intelligent.
- Indistinct, hazy or unclear.
- Disapproving, unfavorable: rarely used outside the phrase take a dim view of.
- (music) Clipping of diminished.
- (archaic) Dimness.
dim (third-person singular simple present dims, present participle dimming, simple past and past participle dimmed)
- (transitive) To make something less bright.
- (intransitive) To become darker.
- To render dim, obscure, or dark; to make less bright or distinct; to take away the luster of; to darken; to dull; to obscure; to eclipse.
- To deprive of distinct vision; to hinder from seeing clearly, either by dazzling or clouding the eyes; to darken the senses or understanding of.