cast doubt on (someone or something)

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cast doubt

To cause someone or something to be viewed with doubt, skepticism, or uncertainty. Why did you change your mind about giving Walt the promotion? Did something happen to cast doubt?
See also: cast, doubt

cast doubt on (someone or something)

To cause someone or something to be viewed with doubt, skepticism, or uncertainty. I considered Walt for the promotion, but his constant lateness soon cast doubt on that decision. Such a significant error really cast doubt on all of the experiment's results.
See also: cast, doubt, on
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

cast doubt(s) (on someone or something)

to cause someone or something to be doubted. The police cast doubt on my story. How can they cast doubt? They haven't looked into it yet. The city council cast doubt on John and his plan.
See also: cast, doubt
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

cast doubt on

Cause something or someone to be questioned. For example, The prosecutor cast doubt on the wife's alibi. This idiom uses cast in the sense of "throw," a usage dating from the early 1200s.
See also: cast, doubt, on
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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