絵え空そら事ごと

noun

fabrication; pipe dream; fantasy

Refers to something completely made up, an unrealistic idea, or a groundless story. Often used critically to dismiss impractical plans or lies.

• 彼かれの話はなしは所しょ詮せん絵え空そら事ごとに過すぎない。

  His story is nothing more than a fabrication after all.

• そんな計けい画かくは絵え空そら事ごとだ。

  That plan is just a pipe dream.