The word cardiomyopathy 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: 30
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (52 words)
adaptor, adipoma, amorphy, amphora, apricot, atrophy, atropia, camphor, carotid, chariot, charity, choroid, chytrid, coadapt, coadmit, compart, comport, cryptid, cyathia, daytrip, diarchy, dimorph, diorama, diptych, domatia, domatic, doormat, drachma, dyarchy, haircap, hardtop, haricot, hydroma, matador, morphic, opacity, parotid, paydirt, porotic, portico, potamic, primacy, prootic, pyramid, roadmap, tapioca, taproom, thyroid, toparch, topiary, trophic, typhoid