| verb | switch (a car's headlights) from a higher to a lower beam |
| verb | become dim or lusterless “the lights dimmed and the curtain rose” |
| verb | make dim or lusterless “Time had dimmed the silver” |
| verb | make dim by comparison or conceal |
| verb | become vague or indistinct “The distinction between the two theories blurred” |
| adjective | lacking in light; not bright or harsh “a dim light beside the bed” |
| adjective | lacking clarity or distinctness “a dim figure in the distance” |
| adjective | made dim or less bright “the dimmed houselights brought a hush of anticipation” |
| adjective | offering little or no hope; ; ; - J.M.Synge “the future looked black” |
| adjective | slow to learn or understand; lacking intellectual acuity; ; ; - Thackeray “so dense he never understands anything I say to him” |
| blur | noun | a hazy or indistinct representation |
| dimness | noun | the property of lights or sounds that lack brilliance or are reduced in intensity |
| subduedness | noun | the property of lights or sounds that lack brilliance or are reduced in intensity |
| faintness | noun | the quality of being dim or lacking contrast |
| vagueness | noun | indistinctness of shape or character |
| bleakness | noun | a bleak and desolate atmosphere |
| denseness | noun | the quality of being mentally slow and limited |
| dullness | noun | the quality of being slow to understand |
| dumbness | noun | the quality of being mentally slow and limited |
| obtuseness | noun | the quality of being slow to understand |
| slowness | noun | unskillfulness resulting from a lack of training |