- (transitive) to make dim or obscure
WordReference Random House Unabridged Dictionary of American English © 2026
be•dim
(bi dim′),USA pronunciation v.t., -dimmed, -dim•ming.
- to make dim;
darken;
obscure.
- be- + dim 1560–70
- becloud, overcast, shroud; muddle.
- illumine, brighten.
Collins Concise English Dictionary © HarperCollins Publishers::
bedim /bɪˈdɪm/ vb ( -dims, -dimming, -dimmed)