Adversarial and Challenging

Adversarial adjective - Marked by opposition or ill will.

Challenging and adversarial are semantically related. In some cases you can use "Challenging" instead an adjective "Adversarial".

Nearby Word: adversary

Challenging adjective - Requiring considerable physical or mental effort.

Adversarial and challenging are semantically related. Sometimes you can use "Adversarial" instead an adjective "Challenging".

Nearby Words: challenge, challenged, challenger