kittee, mitten.
britain, briton, britten, lytton, mitten, smitten, unwritten, written.
knitted, knitter, trinket, kittens.
Your query has returned 29 words, which include anagrams of kitten as well as other shorter words that can be made using the letters included in kitten.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.