dubious

疑わしい

正直さ、安全性、正しさ、信頼性に疑いがある。

やさしい英語で： Probably not honest, safe, correct, or reliable.

• That is a dubious claim.
• They bought medicine from a dubious website.
• His business methods seemed increasingly dubious.

類義語： questionable, doubtful, suspect

反対語： reliable

よく使う表現： dubious claim, dubious decision, dubious reputation

疑っている、懐疑的な

何かが本当か、信頼できるか確信が持てない。

やさしい英語で： If you feel this way, you are unsure whether something is true or can be trusted.

• I am dubious about his story.
• She felt dubious about the proposed changes.
• They remain dubious that the treatment will work.

使い方： dubious about something (He was dubious about the offer.); dubious that… (I am dubious that this plan will succeed.)

類義語： doubtful, skeptical, uncertain

反対語： convinced

よく使う表現： dubious about something, feel dubious, remain dubious, look dubious