水みずと油あぶら

expression, noun

oil and water; incompatible things or people

Idiomatic expression describing two things or people that do not mix well, like oil and water. Often used in the pattern ～は水と油だ.

• あの二人ふたりは水みずと油あぶらで、一いっ緒しょに仕し事ごとをするのは難むずかしい。

  Those two are like oil and water; it's hard for them to work together.

• 彼かれの意い見けんと私わたしの意い見けんは水みずと油あぶらだ。

  His opinion and mine are completely incompatible.