bluegrass, bypass, dumbass, eelgrass, eyeglass, fiberglass, hourglass, impasse, jackass, landmass, outclass, overpass, plexiglas, plexiglas, plexiglass, plexiglass, sassafras, shortgrass, spyglass, sunglass.
Your query has returned 120 words, which include anagrams of tallgrass as well as other shorter words that can be made using the letters included in tallgrass.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.