気(き)が済(す)むto be satisfied, to feel good

借金(しゃっきん)を返(かえ)したので気(き)が済(す)みました。

I felt satisfied because I paid off my debt. {to be satisfied, to feel good}

いじめっ子(こ)たちに仕返(しかえ)しをしたら気(き)が済(す)んだ。

I felt satisfied after getting back at the bullies. {to be satisfied, to feel good}

凝(こ)り性(しょう)の弟(おとうと)は、とことんやらないと気(き)が済(す)まないそうです。

My stubborn younger brother apparently doesn't feel satisfied unless he does things thoroughly. {to be satisfied, to feel good}

自分(じぶん)の思(おも)い通(どお)りにいかないと気(き)が済(す)まないなんて、彼(かれ)は子供(こども)っぽい。

He's childish, insisting on things always going his own way before he can feel satisfied. {to be satisfied, to feel good}

気(き)が済(す)むまでカラオケで一人(ひとり)カラオケをしたら、気分(きぶん)がとてもスッキリした。

After doing karaoke alone at a karaoke place until I was satisfied, I felt very refreshed. {to be satisfied, to feel good}