underestimate
🇺🇸
/ˌʌndərˈestɪmeɪt/
🇬🇧
/ˌʌndərˈestɪmeɪt/
to think something is smaller or less than it really is
Don't underestimate how much time this project will take.
このプロジェクトにかかる時間を過小評価しないでください。
to not see how good, strong, or difficult someone or something really is
You should never underestimate your opponent's skill.
相手のスキルを過小評価してはいけません。
a guess that is too low about size, cost, or amount
My estimate of 100 people was a big underestimate of the actual crowd size.
私の100人という見積もりは、実際の群衆の規模を大きく過小評価していました。