having no equal; superior

so good or unusual that it is impossible to compare to something else

असमान

English Usage: Her performance was unrivaled, unmatched by any other competitor.

Hindi Usage: उसका प्रदर्शन असमान था, किसी अन्य प्रतियोगी से असमान।

better than all others of its kind

अद्वितीय

English Usage: His talent for music is unrivaled, truly peerless among his peers.

Hindi Usage: संगीत में उसकी प्रतिभा अद्वितीय है, वास्तव में अपने साथियों में असमान है।