至し大だい

na-adjective, noun

immense; enormous

A somewhat formal or literary word meaning extremely large in scale, degree, or importance. Often used in written language or formal speech.

• その計けい画かくは至し大だいな努ど力りょくを必ひつ要ようとする。

  The plan requires an immense effort.

• 彼かれの功こう績せきは至し大だいである。

  His achievements are enormous.