あいそづかし
no longer being fond of someone; spiteful words or acts showing that one is disgusted with someone
Also written 愛想づかし、あいそ尽かし
Noun
あいつは優柔不断ゆうじゅうふだんだから、彼女かのじょが愛想尽あいそづかしちゃったんだよ。
She got tired of his waffling and dumped him.