The definition of playful is a lively and fun person or thing, or something said or done in a joking way.
The definition of mischievous is someone or something that causes harm or likes to play and annoy with tricks.
The definition of frisky is a playful or lively person or thing.
Affectedly and often flirtatiously shy or modest:
The definition of flirtatious is behavior, actions or individuals who indicate a sexual interest through comments or actions.
The definition of childish is a person or thing that is silly, immature, like a child or directed at children.
The definition of serious is showing deep thought, not joking, or a situation that requires careful thought.
The definition of lethargic is being sluggish or having little energy.
Harsh or severe:
Find another word for kittenish. In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for kittenish, like: playful, mischievous, frisky, coy, flirtatious, jaunty, childish, coquettish, serious, unplayful and lethargic.