dubiously
🇺🇸
/ˈduːbiəsli/
🇬🇧
/ˈdjuːbiəsli/
with doubt or suspicion
Helen looked at him dubiously, not sure if she could trust him.
ヘレンは彼を疑問符で見るとともに、彼を信頼できるかどうか確信が持てなかった。
in a questionable manner
The company's success was dubiously obtained through illegal means.
その会社の成功は違法な手段を通じて疑問を持って得られました。
with skepticism
He dubiously claimed to have won the lottery.
彼は当選したと疑問を持って主張しました。