A person who attempts to appear clever or knowledgeable, often sarcastically.

A tough or street-smart person, often used derogatorily.

दुर्जेय व्यक्ति

English Usage: "That wise guy won't back down from a challenge."

Hindi Usage: "वह दुर्जेय व्यक्ति किसी चुनौती से पीछे नहीं हटेगा।"