backstairs, companionway, escalator, flight, ghat, ramp, stairs, steps.
aerospace, airspace, anyplace, birthplace, boldface, bookcase, briefcase, commonplace, cyberspace, database, database, everyplace, fireplace, footrace, interface, interface, lactase, lovelace, marketplace, marketplace.
marcasites, ascertains, sectarians, staircases.
Your query has returned 352 words, which include anagrams of staircase as well as other shorter words that can be made using the letters included in staircase.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.