C2 使对…产生怀疑
to make people feel less sure about or have less trust in something or someone
New evidence has cast doubt on the guilty verdict. 新的证据让人们对判罚有罪的裁决产生了怀疑。
The irregularities were serious enough to cast doubt on the validity of the results of the election.
Economists have cast doubt on the reliability of the numbers in the report.
DNA evidence has cast doubt on these claims.
It's extremely unfortunate that cases like these tend to cast suspicion on similar endeavours.
See also: cast verb (DOUBT)