呑気
のんき · nonki · JLPT N2 · na-adj
carefree
🐱 呑 = swallow + 気 = mood: a mood that swallows worries whole
呑 means to swallow or gulp down, and 気 means mind, mood or spirit. Someone who gulps down their worries and keeps a light mood is carefree. Often used for a careless, easygoing attitude.