焼け石に水

Meaning

1. exp
   a drop in the bucket; a drop in the ocean; pointless exercise; waste of time; (something that is) too little, too late; (pouring) water on a hot stone

Example sentences

• ローン地獄で、ボーナスもらっても焼け石に水だよ。

  My bonus doesn't come close to covering all the loan payments I have to make.

• いまさら焦っても焼け石に水じゃないの。

  No matter how much you hurry your effort is just a drop in the bucket.