undercount
🇺🇸
/ˌʌndərˈkaʊnt/
🇬🇧
/ˌʌndəˈkaʊnt/
To not count as many people or things as there actually are in a group.
The survey might undercount the number of people who prefer to stay at home on weekends.
調査は、週末に家に留まりが好きな人の数を少なく見積もりすぎる可能性があります。