IPA: //ʌnˈiːkwəld//
KK: /ʌnˈiːkwəld/
Something that is unmatched or has no equal; it is the best or most outstanding in a particular area.
Her talent in music is unequalled by anyone in the competition.
Unequalled → It is formed from "un-" (meaning not) and "equal" (from Latin "aequalis", meaning equal) and the suffix "-led" (indicating a past participle). The word "unequalled" means not equal or unmatched in quality or degree.
Think of 'not' ('un-') being combined with 'equal' to remember that 'unequalled' means something that is unmatched or superior.