のんき暢気nonkiのんき呑気nonkiノンキnonki
1.

A disposition characterized by a relaxed and easygoing attitude toward life, often showing a lack of concern for troubles or difficulties.

2.

A state of being free from worries or burdens, allowing one to enjoy existence without stress or pressure.

3.

An approach to life that reflects a sense of optimism, where one tends not to hurry or panic in the face of challenges.

4.

A mindset that embodies a laid-back nature, demonstrating patience and thoughtfulness in various situations without becoming flustered.

Example:

お前は当事者じゃないから、そんなのんきなこと言ってられるんだよ。