cast doubt on

1. 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.

Example Sentences

The Acip has cast doubt on the hepatitis B vaccine for months, even though scientists say it is safe and effective at preventing the infection.

From BBC

When they issued their Friday ruling reversing the temporary restraining order against O’Rourke, they not only cast doubt on many of his legal arguments, they also took the time to note his political ambitions.

From Salon

The court still has to rule on the rest of the appeal, but in Friday’s opinion, they cast doubt on some of Paxton’s central arguments.

From Salon

However, several studies have cast doubt on the validity of global centenarian numbers, suggesting data errors, unreliable public records and missing birth certificates may account for elevated figures.

From BBC

The court was also reminded of Bolsonaro's attempts to cast doubt on the electoral system.

From BBC

Related Words

• accuse 
• arraign 
• criticize 
• discredit 
• indict 
• reprimand