The word cephaloglycin 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: 31
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (77 words)
accinge, acyloin, agilely, alcogel, allying, angelic, apogeic, apogeny, caching, cacoepy, calcine, caliche, calicle, calling, cecally, celling, chalice, chancel, cheaply, choleic, choline, cleanly, cloying, coaling, cocaine, cochlea, coeliac, cogency, coinage, collage, conceal, congeal, conical, copying, cyclane, cycling, cyclone, cynical, echoing, eloping, epochal, galleon, glycine, glyphic, gnocchi, halcyon, halogen, haplogy, healing, heaping, helical, helping, hyaline, inplace, laconic, leaping, leching, logical, oceanic, opaline, palling, panicle, pealing, pelagic, pelican, phallic, phonily, pillage, pinhole, placing, plainly, playing, pliancy, polling, yealing, yelling, yelping