A difficult task or problem that requires effort to overcome.

An invitation to compete or take part in a contest.

प्रतिस्पर्धा में भाग लेने का निमंत्रण।

English Usage: He issued a challenge to his friends for a basketball game.

Hindi Usage: उसने अपने दोस्तों को बास्केटबॉल मैच के लिए एक चुनौती दी।

To invite someone to engage in a contest or competition.

To question the validity or authenticity of something.

किसी चीज की वैधता या प्रामाणिकता पर सवाल उठाना।

English Usage: He decided to challenge the verdict in court.

Hindi Usage: उसने अदालत में फैसले को चुनौती देने का निर्णय लिया।