Englishkittenish
adjective
a kittenish pose that I found very endearing:
playful, fun-loving, lighthearted, skittish, mischievous, roguish, impish, frisky, lively;
coquettish, flirtatious, cute, coy, arch, teasing, cheeky, naughty;
frivolous, flippant, superficial, trivial, shallow, giddy, empty-headed, scatterbrained, featherbrained, silly;
informal flirty, dizzy;
archaic frolicsome, sportive, gamesome, frolic;
rare ludic.
▷antonyms serious, solemn, staid.