Skeptical | Mean of skeptical in English Dictionary

/ˈskɛptɪkəl/

• having or expressing doubt about something (such as a claim or statement)
1. She's highly skeptical of/about the researchers' claims.
2. I'm skeptical that he can win. [=I doubt he can win]
3. He says he can win, but I remain skeptical.
4. When I said I'd finished my homework early, Mom looked skeptical.