cynic
/ˈsɪnɪk/
noun
- A person who believes that people are motivated purely by self-interest rather than acting for good or unselfish reasons.
- She's such a cynic that she thinks every act of kindness has a hidden motive.
- Don't be a cynic — sometimes people just want to help.
- The old cynic refused to believe the politician's promises.
- A person who is skeptical or distrustful of the sincerity or value of something, such as an idea, institution, or social norm.
- As a cynic about corporate culture, he never trusted company retreats.
- Even the biggest cynic had to admit the charity event was well-organized.
- The journalist was a cynic when it came to government transparency.