鬼(おに)に金棒(かなぼう)

おににかなぼう
expression (proverb)
making the strong even stronger; like giving a demon an iron club
1. making the strong even stronger
A proverb meaning that adding more strength or resources to someone or something already powerful makes them even more formidable. Similar to 'adding fuel to fire' but in a positive sense.
彼(かれ)が新(あたら)しい技術(ぎじゅつ)を身(み)につけたら、鬼(おに)に金棒(かなぼう)だ。
If he learns this new skill, he'll be unstoppable.
あのチームに彼女(かのじょ)が加(くわ)わったら鬼(おに)に金棒(かなぼう)だね。
If she joins that team, they'll be invincible.
語学力(ごがくりょく)があれば、彼(かれ)の専門知識(せんもんちしき)は鬼(おに)に金棒(かなぼう)になる。
If he had language skills, his expertise would become even more powerful.

PROVERB MEANING:
An 鬼(おに) (demon/ogre) is already fearsome; giving it a 金棒(かなぼう) (iron club) makes it even more dangerous. The proverb describes a situation where someone or something already strong gains an additional advantage.

CULTURAL BACKGROUND:
鬼(おに) are supernatural creatures in Japanese folklore, often depicted as large, powerful demons carrying iron clubs. They are central figures in many Japanese legends and festivals.

USAGE:
Usually used positively to describe gaining a significant advantage. Can also be used to express concern about an opponent becoming too strong.

ENGLISH EQUIVALENTS:

  • Like giving wings to a tiger
  • Icing on the cake (though this is more positive)
  • An embarrassment of riches
general
Added 2026.1.17 13:09 · Revised 2026.6.16 0:20
06000/06143_oninikanabou