Formal:
* The government threatened reprisal against any further attacks on its citizens.
* The company faced reprisals for its unethical business practices.
* The rebels launched a series of reprisals against the occupying forces.
Informal:
* After getting caught cheating, she feared reprisals from her classmates.
* He warned his friends about the reprisals they might face if they were caught.
* The boss took reprisals against the employee who spoke out against him.
Note: "Reprisal" often refers to a violent or aggressive act taken in retaliation for a previous offense. It can also be used in a more general sense to mean any negative consequence or punishment.