The word circumvoluted 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™ Plays In The Letters
Seven Letter Word Alert: (55 words)
cervoid, circled, circlet, cloture, clouted, codrive, comedic, cometic, coulter, courted, couture, culture, culvert, cuticle, cutover, decorum, demotic, diluter, divorce, dormice, ductile, ductule, duumvir, eductor, eluvium, eudicot, evictor, icecold, ioduret, louvred, melodic, moldier, motlier, moulder, moulted, occlude, occuder, oldtime, outduel, outlier, outlive, outride, overcut, overlit, oviduct, remould, rivulet, toluide, tumeric, turmoil, verdict, volumed, vomited, vomiter, vulture