dim

dim — adjective

1. describing a space or area where there is not enough light to see well, because

1.adjectiveA2
Definition

describing a space or area where there is not enough light to see well, because only weak bulbs are used or because the sun is going down.

Example

The basement was so dim that Nora could not read the labels on the boxes.

so dim that + result clause

A single dim lamp stood on the desk in the corner of the study.

dim + lamp / light / bulb (attributive)

Common collocations
  • dim light
  • dim room
  • dim street
  • dim corner
  • dim lamp
Synonyms
  • faint

    suggests a light that is barely visible or at a distance

  • gloomy

    adds a feeling of sadness or depression to the lack of light

  • murky

    describes darkness that is also hard to see through, like fog or dirty water

Antonyms
  • bright

    strong, clear light; the direct opposite of dim

  • brilliant

    very bright, almost too bright to look at

Grammar Patterns

dim + noun (lamp/room/street)

be + dim

linking verb + dim (grow/seem/look)

Usage Note

Often used with linking verbs like 'grow', 'seem', or 'look'. When an adverb is needed, use 'dimly': 'a dimly lit room'.

Common Mistakes

A dimful room.
A dim room.
'dim' does not take the suffix '-ful'; it is used as a plain adjective.
The light is dimming.' (when describing a state)
The light is dim.
use the adjective for a fixed state; use the verb 'dim' for a change happening over time.

2. describing eyesight that is weak or unclear, especially when caused by getting o

2.adjectiveB1
Definition

describing eyesight that is weak or unclear, especially when caused by getting older, being very tired, or having a health condition that affects your eyes.

Example

Roya rubbed her eyes, which felt dim after a long night of studying.

eyes + be / feel + dim

As her grandmother aged, her vision grew dim and she needed large-print books.

vision / sight + grow dim

Common collocations
  • dim eyes
  • dim vision
  • dim sight
  • grow dim
Synonyms
  • blurry

    more common in everyday speech for unclear vision

  • fuzzy

    informal; describes edges and shapes that are not sharp

  • cloudy

    often used for vision problems caused by cataracts

Antonyms
  • clear

    sharp vision; able to see all details easily

  • sharp

    strong, precise eyesight

Grammar Patterns

eyes + be + dim

vision / sight + grow dim

Usage Note

Typically used of a person's eyes or vision, not of an object. Distinguish from sense 1: here 'dim' describes sight, not the light level in a room.

Common Mistakes

My glasses are dim.
My vision is dim without my glasses.
'dim' describes the ability to see, not the glasses themselves.

3. describes a memory, image, or idea that you can only recall in an unclear or inc

3.adjectiveB2
Definition

describes a memory, image, or idea that you can only recall in an unclear or incomplete way, as if the details have faded over time.

Example

Zola had only a dim memory of the beach holiday from her early childhood.

a dim memory / recollection / impression of

Tamar had only a dim impression of the woman at the bus stop.

dim impression / dim sense

Common collocations
  • dim memory
  • dim recollection
  • dim impression
  • dim awareness
Synonyms
  • vague

    almost interchangeable; 'vague' is more common for ideas, 'dim' is more common for memories

  • faint

    suggests a memory that is barely present

  • hazy

    informal; suggests a memory that is unclear like looking through fog

Antonyms
  • clear

    a memory you can recall in full detail

  • vivid

    a very strong, detailed, and lifelike memory

Grammar Patterns

a dim + memory / recollection / impression of + noun/-ing

grow dim in one's mind

Usage Note

Almost always appears with 'memory', 'recollection', or 'impression'. Not used with concrete nouns like 'table' or 'house' — you would say 'a dim memory of a house', not 'a dim house'.

Common Mistakes

I have a dim book about the war.
I have a dim memory of a book about the war.
'dim' describes the memory, not the object itself.

4. slow at understanding or learning things that most people find easy; not natural

4.adjectiveB2
Definition

slow at understanding or learning things that most people find easy; not naturally quick in thinking.

Example

The other kids teased Christopher for being a bit dim in maths lessons.

a bit / rather / very + dim (degree adverb)

His dim cousin could not work the TV remote however often he was shown.

dim (attributive before noun)

Common collocations
  • a bit dim
  • rather dim
  • not as dim as
  • dim-witted
Synonyms
  • dull

    similar meaning but slightly old-fashioned

  • slow

    gentler than 'dim'; often used more politely

  • dim-witted

    common compound form; slightly less harsh than 'dim' alone

Antonyms
  • bright

    quick to understand; the closest opposite in register

  • sharp

    very intelligent and quick-thinking

  • clever

    able to learn and solve problems quickly

Grammar Patterns

be + dim

a bit / rather / very + dim

call + person + dim

Usage Note

Informal and can be insulting. The compound 'dim-witted' is common and slightly less harsh than calling someone 'dim' alone. Avoid in formal or polite contexts.

Common Mistakes

He is a dim person about the problem.
He is a bit dim.
'dim' for intelligence does not take a prepositional complement like 'about'.
She is dim to understand.
She is too dim to understand.
when linking to an infinitive, add 'too' to express that the lack of intelligence prevents the action.

5. describing the future, chances, or situation of someone or something as unlikely

5.adjectiveB2
Definition

describing the future, chances, or situation of someone or something as unlikely to improve or succeed.

Example

The team's chances of winning the championship looked dim after their star player got hurt.

chances / prospects + look / seem dim

With the local economy struggling, the future of the small bakery seemed dim.

future / outlook + seem dim

Common collocations
  • dim prospects
  • dim chances
  • dim future
  • dim outlook
  • look dim
  • remain dim
Synonyms
  • bleak

    stronger tone; suggests desperation or hopelessness

  • gloomy

    adds a sense of sadness to the lack of hope

  • poor

    more general; less vivid but safer in formal writing

Antonyms
  • bright

    hopeful; likely to succeed — 'a bright future'

  • promising

    showing signs of future success

  • rosy

    informal; extremely positive and optimistic

Grammar Patterns

chances / prospects + look / seem dim

future / outlook + grow dim

dim + prospects / chances / future

Usage Note

Subject is almost always an abstract noun such as 'chances', 'prospects', 'future', or 'outlook'. Cannot describe a concrete object — you would not say 'a dim job'.

Common Mistakes

His job prospects are dimming.
His job prospects are dim.
for a fixed negative state, use the adjective; use the verb 'dim' only when describing the process of becoming worse.
Idioms

To have a negative opinion about someone or something.

My boss took a dim view of my late arrival.

Why does the teacher take a dim view of group projects?

dim — adverb

dim — verb

Word family

  • dimly
    adverbB2
  • dimness
    nounC1
  • dim-witted
    adjectiveB2

Synonym discussion

Sense: adjective/1

All four words describe a lack of light, but they differ in how much light remains and what feeling they add. 'Dim' means reduced light — you can still see, but with difficulty: a dim lamp still gives some glow. 'Dark' means little or no light at all: 'the room went dark when the power failed'. 'Gloomy' adds a feeling of sadness or depression to the lack of light, often used for weather ('a gloomy winter sky') or atmosphere. 'Faint' describes a light source that is barely visible, usually because it is far away or extremely weak: 'a faint star in the night sky'. A dim room has some light that is hard to see by; a dark room has almost none; a gloomy room feels sad because of the low light; a faint light is barely there at all.

Common collocations

Nouns

  • dim light
  • dim room
  • dim memory
  • dim prospect
  • dim future

Adverbs

  • dimly lit
  • very dim
  • rather dim
  • a bit dim

Phrases

  • dim and distant
  • dim and blurry
  • grow dim
  • look dim
  • remain dim

Prepositions

  • dim with (age)

Etymology

Old EnglishMiddle EnglishModern English

'Dim' comes from Old English 'dim(m)', meaning 'dark, gloomy, or obscure'. The word has been in the language for over a thousand years and is related to Old High German 'timbar' (dark) and Old Norse 'dimbr'. The core sense of 'not bright' has stayed remarkably stable through the centuries, while figurative extensions grew gradually: the poor-vision sense appeared by the 13th century, the unclear-memory sense by the 16th, the 'stupid' sense by the late 19th century, and the 'poor prospects' sense by the early 20th. The verb form developed naturally from the adjective in early Middle English.