A person, group, or force that opposes or attacks; opponent.

An opponent in a contest or conflict.

प्रतियोगिता में प्रतिरोधक

English Usage: As a boxer, he was known for defeating every adversary he faced.

Hindi Usage: एक मुक्केबाज के रूप में, वह हर प्रतियोगिता में प्रतिरोधक को हराने के लिए जाना जाता था।