English Reference
adjective · verb

dim

adj. · v.
US /ˈdɪm/ UK /dˈɪm/ dim UK spelling dimmed, DIMS

  1. 01 B1 Intermediate

    adj.having very little light, making it difficult to see clearly.

    adj.characterised by a low level of light; lacking brightness or clarity of illumination.

    Simple

    The light in the hallway was too dim to read the room numbers.

    In context

    The dim glow from the streetlamp barely reached the far corner of the garden, leaving most of the path in deep shadow.

  2. 02 B2 Upper Intermediate Informal

    adj.not very intelligent or quick to understand things.

    adj.lacking intellectual acuity or mental sharpness.

    Simple

    He is a nice guy, but he can be a bit dim when it comes to technology.

    In context

    The character is portrayed as well-meaning but somewhat dim, often missing the obvious clues that the audience sees immediately.

    slowthickunintelligent
  3. 03 B2 Upper Intermediate

    adj.not clear in your mind, like a memory that is fading.

    adj.lacking distinctness in the mind or senses; faint or indistinct.

    Simple

    I have a dim memory of visiting this park when I was a small child.

    In context

    The distant mountains were only a dim outline against the grey morning sky.

  4. 04 B2 Upper Intermediate

    v.to make a light less bright, or to become less bright yourself.

    v.to reduce the intensity of a light source; may be used transitively or intransitively.

    Simple

    The lights began to dim just before the movie started.

    In context

    The theatre manager instructed the technician to dim the house lights slowly to signal that the performance was about to begin.

Age has slowed her body, but it has not dimmed the songs that have stayed with her for more than seven decades.

Al Jazeera· 14 Aug 2026
This entry
Level B2 · Upper Intermediate
Frequency Frequent
Updated