English nonpareil

← Middle English non-parail (inherited)

← Middle French nonpareille (derived)

← Middle French nonpareil (mention)

← Middle French non- (mention)

← Middle French pareil (mention)

← Middle French (mention)

← Old French pareil (derived)

← Proto-Indo-European *-lós (root)

← Latin pār (derived)

← Latin -culus (mention)

← Latin -ulus (mention)

→ English matchless (link)