[cast] doubt on {sth}
1
to create uncertainty or skepticism by questioning the truth or validity of something
- His conflicting statements cast doubt on his innocence in the case.
- The lack of evidence cast doubt on the accuracy of the report.
- Recent developments have been casting doubt on the reliability of the witness's testimony.
- The professor encouraged students to cast doubt on traditional theories and think critically.
- The new evidence is casting doubt on the accuracy of the report.