mirthful laughter
mirthful occasion
mirthful atmosphere
mirthful celebration
A: Why is everyone in such a great mood today?
A：今天大家为什么心情这么好？
B: The mirthful atmosphere is due to the upcoming holiday.
B：这种欢快的气氛是因为即将到来的假期。
1) 充满笑声的
2) 快乐的
3) 欢快的
1. 充满欢笑的，快乐的
adjective
1. Full of mirth; expressing or accompanied by laughter and enjoyment.
Synonym: joyful, merry, jovial