I need to go to the counter to check in for my flight.

He quickly countered with a riposte after dodging his opponent's thrust.

Publications which are counter to the general good are to be forbidden.

Your idea runs counter to our policy.

The counter at the store is responsible for calculating the total amount of purchases.

Where is the check-in counter?

I used a Geiger counter to measure the radiation levels.

I bought some stocks over-the-counter.

The shop was selling under-the-counter goods.

After careful consideration, he presented a counter proposal to address the project's shortcomings.