問もん題だい外がい

noun which may take the genitive case particle 'no', na-adjective

out of the question; unthinkable; impossible

Used to express that something is not even worth considering; it is completely unacceptable or impossible.

• そんな条じょう件けんは問もん題だい外がいだ。

  Those conditions are out of the question.

• 彼かれの提てい案あんは問もん題だい外がいだった。

  His proposal was unthinkable.