also: ここんぶそう
unparalleled in history; matchless through all ages
A yojijukugo used to describe someone or something that has no equal in all of history. Often found in literary or rhetorical contexts.
His achievements were praised as unparalleled in history.
A matchless sword, unrivaled through the ages, is on display.
天下無双 means 'unrivaled under heaven' (in the whole world), while 古今無双 emphasizes being unmatched across all of history.
Standard kanji spelling for this yojijukugo.
Obsolete reading; the modern standard is ここんむそう.
A yojijukugo composed of 古今 (ancient and modern, i.e., all ages) and 無双 (unparalleled). The exact origin is uncertain, but it follows a common four-character pattern for expressing supreme uniqueness.