(noun, adjective, verb, adverb)


1. lacking in light; not bright or harsh

- a dim light beside the bed

Similar word(s): dark, subdued

2. lacking clarity or distinctness

- a dim figure in the distance

Similar word(s): indistinct, faint, shadowy, vague, wispy

3. made dim or less bright

- the dimmed houselights brought a hush of anticipation

- dimmed headlights

- we like dimmed lights when we have dinner

Similar word(s): dimmed

4. offering little or no hope

- took a dim view of things

Similar word(s): hopeless, black, bleak

5. slow to learn or understand; lacking intellectual acuity

- never met anyone quite so dim

Similar word(s): stupid, dense, dull, dumb, obtuse, slow

Sentences with dim as an adjective:

- The lighting was too dim for me to make out his facial features.

- He may be a bit dim, but he's not retarded.

- His vision grew dimmer as he aged.


1. (obsolete) Dimly, indistinctly.


1. (archaic) Dimness.


1. switch (a car's headlights) from a higher to a lower beam

Similar word(s): dip

Definition categories: perception

2. become dim or lusterless

- the lights dimmed and the curtain rose

Definition categories: change

3. make dim or lusterless

- Time had dimmed the silver

Definition categories: change, darken

4. make dim by comparison or conceal

Similar word(s): blind

Definition categories: change, darken

5. become vague or indistinct

Similar word(s): blur, slur

Definition categories: change, weaken

Sentences with dim as a verb:

- He dimmed the lights and put on soft music.

- The lights dimmed briefly when the air conditioning was turned on.