Feeling better with 気が済む

The expression 気(き)が済(す)む translates as “to feel satisfied” or “to be at peace (mentally)”. It conveys a sense of mental or emotional relief after resolving a concern, achieving a goal, or completing a task. One’s 気 (mood, feelings) does the action 済む (to feel at ease).

Dictionary Definition

気持(きも)ちがおさまる。また、満足(まんぞく)する。心(こころ)が落(お)ち着(つ)く。

Feelings settle down. To be content again. The mind calms down.

Goo Dictionary

Examples

Feeling better after a scolding with 気が済む

Futaba is falsely accused of stealing by a lunch lady, but Tanaka steps in and vindicates her. Soon after, Futaba thanks Tanaka, saying that when she was accused, she was so angry she didn’t know what to do.

双葉(ふたば):

「でも田中(たなか)くんが怒(おこ)ってくれたから気(き)が済(す)んじゃった」

“But since you scolded her for me, I felt better.”