IPA: /ˈpɪə.ləs/
KK: /ˈpɪr.ləs/
Something that is unmatched or has no equal; it is the best or most excellent in its category.
Her talent in music is peerless, making her the top performer in the competition.
Peerless → It is formed from "peer" (from Old French *per*, meaning equal or match) and "-less" (meaning without). The word "peerless" means without an equal or unmatched in quality or excellence.
Think of someone who has no "peer" or equal, which is what makes them "peerless".