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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. literary If your eyes are dim, you cannot see very well. 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.

dim adjective (NOT CLEVER)

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

dim adjective (NOT POSITIVE)

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

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. literary to (make a positive feeling or quality) become less strong: Our hopes/expectations dimmed as the hours passed.
(Definition of dim from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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