athlete, bittersweet, bradstreet, browbeat, buckwheat, crabmeat, deadbeat, drumbeat, heartbeat, mesquite, mincemeat, obsolete, overeat, overheat, parakeet, upbeat, worksheet.
Your query has returned 810 words, which include anagrams of spreadsheets as well as other shorter words that can be made using the letters included in spreadsheets.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.