This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. To report (income or crime statistics, for example) as being less than actually is the case.

v. To report a number falsely, making it smaller than it ought to be, especially to do so intentionally

v. As a group, to report something less frequently than it actually occurs

"One concern, Shrestha noted, is that the study relied on women to report how much they smoked and drank during pregnancy, and people often "underreport" any behavior they believe will be frowned upon."

underreported    underreports   

Court    Dort    Mort    Porte    Stuart