noun, noun which may take the genitive case particle 'no'
peerless bravery; matchless valor
A literary or formal compound praising someone's courage and martial prowess as unmatched. Often used in historical or dramatic contexts.
His deeds of peerless bravery are still talked about today.
He is renowned as a general of matchless valor.
勇猛果敢 emphasizes bold and resolute courage in action, while 武勇絶倫 stresses the unmatched degree of martial bravery.
天下無双 means 'unrivaled under heaven' and can apply to any skill or quality, whereas 武勇絶倫 is specifically about martial valor.
A yojijukugo (four-character compound) combining 武勇 (bravery in battle) and 絶倫 (peerless, unmatched). The exact historical origin is uncertain, but it follows a common pattern of classical Chinese-derived compounds used in literary Japanese.