The defendant filed a counterclaim against the plaintiff.

Turn the knob counterclockwise to decrease the volume.

The counterculture movement of the 1960s challenged the established social norms.

Counterespionage is the practice of opposing enemy spy activities.

He was arrested for producing counterfeit money.

The police arrested a counterfeiter who was making fake money.

I always keep the counterfoil of my cheques for record keeping.

The military implemented a counterinsurgency strategy to combat the guerrilla activities.

Counterintelligence is the process of gathering information about an enemy or potential enemy's intelligence, activities, and capabilities.

I applied a counterirritant to my sore muscles to relieve the pain.