Trust And Distrust

noun a feeling of disappointment resulting from the discovery that something is not as good as one believed it to be

• The candidate's promises of reform eventually led to disillusion among the voters.
• I was completely disillusioned when I found out the truth about the company's practices.
• I was so hyped for the concert, but I left feeling totally disillusioned.
• The once idealistic artist became disillusioned with the commercialism of the art world.

noun a person who pretends to be a friend but actually betrays or deceives others

• The company uncovered evidence of a front-stabber within the organization.
• I can't believe he turned out to be a front-stabber after all this time.
• Watch out for that guy, he's a total front-stabber.
• In the world of politics, front-stabbers are unfortunately quite common.