Perfidious

The perfidious student plagiarized an entire essay for a good grade.

He proved to be a perfidious friend by spreading rumors behind her back.

The perfidious contractor took the money upfront and never completed the construction project.

The perfidious friend betrayed my trust by spreading false rumors about me.

The perfidious politician made promises during the election campaign but failed to fulfill them.

The perfidious salesperson sold me a faulty product and refused to provide a refund.

The perfidious salesperson deceived the customers by selling them counterfeit products.

The perfidious friend betrayed his best friend by spreading rumors about him.

The perfidious mechanic charged me for unnecessary repairs that my car didn't need.

The perfidious landlord refused to make necessary repairs to the apartment despite multiple requests.

The perfidious journalist fabricated stories to create sensational headlines.

The perfidious neighbor stole packages from other people's porches.

The perfidious contractor used cheap materials and charged exorbitant prices.

The perfidious friend spread rumors about her best friend's secret.

The perfidious politician broke his promises to the voters.

The perfidious spy betrayed his country and revealed classified information.

The perfidious friend betrayed her secrets to the entire school.

The perfidious spy sold classified information to the enemy.

The perfidious partner cheated on his spouse with multiple people.

The perfidious student copied his classmate's work and claimed it as his own.

The perfidious salesman promised a lifetime warranty but never delivered.

The perfidious politician made false promises to win the election.

The perfidious spy leaked classified information to a rival country.

The perfidious athlete used performance-enhancing drugs to win the race.

The politician's perfidious behavior betrayed the trust of his constituents.

The perfidious employee stole valuable trade secrets and shared them with a rival company.

The perfidious babysitter neglected the children in her care and left them unsupervised.