The Collaborative International Dictionary
kittenishly
kittenish \kit"ten*ish\, a.
Resembling a kitten; playful; as, a kittenish disposition.
--Richardson.
[1913 Webster] -- kit"ten*ish*ly, adv. --
kit"ten*ish*ness, n.
Wiktionary
kittenishly
adv. In a kittenish manner.