Betrayal And Deception

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.

verb to renounce or give up on oath; to swear falsely; to commit perjury

• I hereby forswear any allegiance to the rebel group.
• I promise to forswear junk food for a month.
• I ain't gonna forswear my right to party!
• She had to forswear her dreams of becoming a professional dancer due to injury.

noun the crime of betraying one's country, especially by attempting to kill or overthrow the sovereign or government

• The act of betraying one's country is considered treason and is punishable by law.
• Selling classified information to a foreign government is a serious case of treason.
• Dude, that's straight up treasonous behavior!
• In literature, the protagonist's decision to betray his own values can be seen as a form of internal treason.