playful

cheerful comical flirtatious frisky good-natured impish joking lighthearted lively mischievous spirited sprightly tongue-in-cheek whimsical

antic blithe coltish elvish feeling one's oats frolicsome full of pep gamesome gay jaunty jesting jocund joyous merry mirthful prankish puckish rollicking snappy sportive teasing vivacious waggish zippy

apathetic behaved depressed dispirited grave inactive lazy lethargic lifeless sad serious unhappy

humorless working