acetone, allophone, anemone, anklebone, anticyclone, argonne, backbone, baritone, bloodstone, bluestone, brownstone, capstone, chaperone, cheekbone, cherrystone, cicerone, cobblestone, collarbone, cornerstone, cortisone.
Your query has returned 573 words, which include anagrams of undertones as well as other shorter words that can be made using the letters included in undertones.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.