The word demoniacally is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 24
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (53 words)
academy, aclinal, acnodal, acyloin, adenoma, aeolian, alamode, alimony, allayed, allonym, alloyed, amidone, amyloid, anaemic, animacy, anomaly, calomel, camelid, candela, cedilla, claimed, cleanly, coalman, coalmen, codilla, codille, collide, condyle, cyanide, cyanoid, decalin, decimal, declaim, demonic, dynamic, ideally, illmade, indolyl, laminae, laminal, lamnoid, leadman, manacle, manilla, medical, melodic, micella, modally, mycelia, myeloic, myeloid, nomadic, oldlace