The word cerebration 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (53 words)
abortee, aborter, acetone, aconite, aerobic, airborn, arbiter, arenite, baronet, botanic, cabinet, carbeen, carbene, carbine, carrion, caterer, cerebra, certain, cornier, coterie, crabier, creator, enactor, enrober, enteric, enticer, erector, erotica, erratic, etaerio, iceboat, inerter, niobate, orbiter, ornater, otarine, rarebit, reactor, rebater, rebrace, reciter, recrate, reenact, reinter, retrace, retrain, tearier, terrace, terrain, terrane, trainee, trainer, triaene