understatement

Commander Murphy told the hearing that to call their appearance a surprise was a "slight understatement".

Or, as bank staff said, with remarkable understatement when they opened the branch on Monday morning: "We found the vault in some disorder."

Admitting that to say it was controversial was an "understatement", she said there had been a significant reduction in accidents.

To say Reilly's character has been put through the wringer would be an understatement.

To say that jazz saxophonist Kamasi Washington is a fan of Los Angeles is an understatement.