abolition, academician, acquisition, addition, admission, admission, admonition, ambition, ammunition, apparition, attrition, audition, clinician, coalition, cognition, commission, competition, composition, condition, contrition.
Your query has returned 1046 words, which include anagrams of decomposition as well as other shorter words that can be made using the letters included in decomposition.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.