方ほう底てい円えん蓋がい

noun

total mismatch; ill-suited; square peg in a round hole

A yojijukugo literally meaning 'square base, round lid', used to describe things that are fundamentally incompatible or mismatched. Often used in formal or written contexts.

• 彼かれの提てい案あんと我われ々われの計けい画かくは方ほう底てい円えん蓋がいだ。

  His proposal and our plan are a total mismatch.

• この契けい約やくは方ほう底てい円えん蓋がいで、双そう方ほうにとって利り益えきがない。

  This contract is ill-suited and benefits neither party.