Question

Find odd one out ally antagonist opponent adversary

Answer 1

The odd one among all the options given, namely:

Ally, antagonist, opponent and adversary is ally.

This is because all the other three terms, namely, antagonist, opponent and adversary convey the same meaning that is villain or enemy.

Only ally has a different meaning which means a tie or a cooperating friendship that is bonded for a particular purpose. Thus ally is the odd one out.