金きん甌おう無む欠けつ

noun

flawless; perfect

Describes something completely without defect, often used in formal or literary contexts. As a yojijukugo, it carries a classical, elevated tone.

• 彼かれの計けい画かくは金きん甌おう無む欠けつに見みえたが、実じっ際さいにはいくつかの問もん題だいがあった。

  His plan seemed flawless, but in reality there were several problems.

noun

(a nation) never invaded by outside forces

Specifically refers to a nation that has maintained its sovereignty without ever being invaded. This is a historical and somewhat rare usage, often found in discussions of national integrity.

• この国くには長ながい歴れき史しの中なかで金きん甌おう無む欠けつを誇ほこってきた。

  This country has prided itself on never having been invaded throughout its long history.