Meanings
Noun
happy mood; euphoric mood
Example sentences
明日から５連休だから、みんなルンルン気分だね。
Everybody is in a good mood looking forward to the five-day holiday that starts tomorrow.
今日は彼とデートだから、朝からウキウキ、ルンルン気分。
I have a date with my boyfriend today, so I've been in a bliss since this morning.