backache, beefsteak, bellyache, cheesecake, cupcake, daybreak, earthquake, fruitcake, handshake, headache, heartache, heartbreak, hotcake, intake, jailbreak, keepsake, kittiwake, milkshake, muckrake, namesake.
Your query has returned 136 words, which include anagrams of mandrake as well as other shorter words that can be made using the letters included in mandrake.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.