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English definition of “dim”

dim

adjective uk   /dɪm/ (dimmer, dimmest) us  

dim adjective (NOT CLEAR)

C2 not giving or having much light: The lamp gave out a dim light. He sat in a dim corner of the waiting room. We could see a dim (= not easily seen) shape in the fog.Darkness and becoming dark literary If your eyes are dim, you cannot see very well.Eyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers a dim memory, recollection, etc. C2 something that you remember slightly, but not very well: I had a dim recollection of having met her before.Memory and memories

dim adjective (NOT CLEVER)

informal not very clever: He's a nice guy, but a little dim. Don't be dim!Stupid and sillyOf unsound mind

dim adjective (NOT POSITIVE)

not likely to succeed: The company's prospects for the future are rather dim.Not hopeful
dimly
adverb uk   /ˈdɪm.li/ us  
The room was dimly lit. I dimly remembered seeing the film before.Darkness and becoming dark
dimness
noun [U] uk   /ˈdɪm.nəs/ us  
Darkness and becoming dark

dim

verb [I or T] uk   /dɪm/ (-mm-) us  
C2 to (make something) become less bright: Someone dimmed the lights. The lights dimmed and the curtains opened.Darkness and becoming dark literary to (make a positive feeling or quality) become less strong: Our hopes/expectations dimmed as the hours passed.Becoming and making less strong
(Definition of dim from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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