vindictive

"John received a warning for his first parking infraction – parking too close to the fire hydrant. "

"Indifference is the sweetest revenge."

"My daughter's teacher is very kind and helpful. "

"The employee felt wronged when he was unfairly passed over for the promotion. "

"The student's sabotage of the rival team's project was successful, delaying their presentation and causing them to lose the competition. "

"The school's punishment for cheating was a week of detention. "

"Denim has a tendency to fade."

"He is a student of life."

"His chains now broken, the prisoner turned a vengeful eye toward his former captors."

"My sister's reputation for being organized helped her excel in school. "

"The jury awarded $10,000 in punitive damages."

"The carnival games were unfairly difficult, and hardly anybody won a prize."