Not bright or distinct; wanting luminousness or clearness; obscure in luster or sound; dusky; darkish; obscure; indistinct; overcast; tarnished.
Of obscure vision; not seeing clearly; hence, dull of apprehension; of weak perception; obtuse.
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.
switch (a car's headlights) from a higher to a lower beam
become or make darker; "The screen darkend"; "He darkened the colors by adding brown"
become vague or indistinct; "The distinction between the two theories blurred"
lacking in light; not bright or harsh; "a dim light beside the bed"; "subdued lights and soft music"
lacking clarity or distinctness; "a dim figure in the distance"; "only a faint recollection"; "shadowy figures in the gloom"; "saw a vague outline of a building through the fog"; "a few wispy memories of childhood"
made dim or less bright; "the dimmed houselights brought a hush of anticipation"; "dimmed headlights"; "we like dimmed lights when we have dinner"
slow to learn or understand; lacking intellectual acuity; "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students"
1. Somewhat dark; not bright. 2. Without luster; dull. 3. Decrease the amount of light.