筋すじ合あい

noun

reason; right; grounds

Used when questioning whether someone has the right or justification to do something, often in negative or interrogative expressions like 筋合いはない (have no right) or そんな筋合いはない (you have no right to do that).

• あなたにそんなことを言いわれる筋すじ合あいはない。

  You have no right to say such a thing to me.

• 彼かれが怒おこる筋すじ合あいはないと思おもう。

  I don't think he has any reason to be angry.