The dictionary meaning of the term "opponent" is "adversary"; "enemy "; "one who opposes your interests".

字典里“对手”一词的意思是“敌手”、“敌人”、“与你的利益相悖的人”。

youdao

Speaking to the enemy should never be ruled out. But withholding talks can sometimes make your adversary give something up beforehand.

虽说永远不应该排除与敌对话，但是拒绝对话有时能够让对手预先放弃一些东西。

youdao

The Kings of the earth, and all the inhabitants of the world, would not have believed that the adversary and the enemy should have entered into the gates of Jerusalem.

地上的君王和世上的居民都不信敌人和仇敌能进耶路撒冷的城门。

youdao

Should such a high risk attack fail due to faulty information or prudent anticipation on the part of the adversary, the enemy may not be deterred and may respond with even greater force.

CENTERFORSECURITYPOLICY: Center for Security Policy | Chinese Information Warfare: A Phantom Menace or Emerging Threat? | Page: 14

In relationships courage will show you to be a trusted friend, whereas the absence of courage will reveal you as a gossip, adversary, or even enemy.

FORBES: Every Great Leader Has This Quality - Do You?

We can never know with certainty when or where the next major theater war will occur, who our next adversary will be, how an enemy will fight, who will join us in a coalition, or precisely what demands will be placed on U.S. forces.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century