Carefree with 呑気
性格や気分がのんびりとしていること。こせこせしないこと。
One's character and mood are in a relaxed manner. Not being anxious.
Goo Dictionary
呑気 is being carefree or careless. Relaxed and easygoing.
Examples
Further Reading
- Garrison, Jeff et al. Kodansha's Dictionary of Basic Japanese Idioms, Kodansha, 2002, p. 460