leikkimieliset
Leikkimieliset is a Finnish term derived from leikki (play) and mieli (mind/temper). It is used as a plural form of leikkimielinen, an adjective meaning playful, light-hearted, or good-natured. In practice, leikkimieliset can function as a noun referring to people who display such an attitude, or more broadly to groups or situations characterized by playfulness rather than formality or competition.
The concept emphasizes social atmosphere rather than strict seriousness. In everyday language it describes actions, conversations,
Etymology: the term is a compound of leikki "play" and mieli "mind/temper." It contrasts with asiallinen (serious)