apparels, clappers, scrapple, flappers, grapples, appliers, preplans, sapropel, prolapse, slappers.
Your query has returned 146 words, which include anagrams of slapper as well as other shorter words that can be made using the letters included in slapper.
The words in this list can be used in games such as Scrabble, Words with Friends and other similar games.