one that cannot be conquered or overcome

जो नहीं जीता जा सकता

English Usage: His spirit remained unvanquished despite the many challenges.

Hindi Usage: कई चुनौतियों के बावजूद, उसकी आत्मा अविजित रही।

not defeated or overcome; undefeated

अपराजित

English Usage: They were proud of their unvanquished team.

Hindi Usage: वे अपनी अपराजित टीम पर गर्वित थे।