IPA: //ʌnˈraɪvld//
KK: /ʌnˈraɪvld/
Something that has no equal or competitor, making it the best in its category.
Her talent in music is unrivaled, setting her apart from all other musicians.
Comparative: more unrivaled
Superlative: most unrivaled
Unrivaled → It is formed from "un-" (meaning not) and "rival" (from Latin "rivalis", meaning one who competes). The word "unrivaled" means not having any competitors or equals.
Think of 'not' ('un-') having any 'competitors' ('rival') — that's why something that is unrivaled stands alone without competition.