The word portentously 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: 20
Highest Scoring Words With Friends™ Plays In The Letters portentously
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Seven Letter Word Alert: (83 words)
elusory, elutors, entropy, entrust, leprosy, leprous, leptons, looters, lottery, nutlets, nutters, onerous, operons, opulent, outlets, outplot, outpost, outsole, outstep, outyelp, penults, petrols, plotter, plouter, plutons, polyose, poorest, portent, portlet, postern, posture, potters, pottery, pottles, poulter, poultry, pouters, pronely, pronest, protest, protons, punster, punters, putters, pylorus, pyrones, replots, respool, retools, rootlet, snooper, snotter, spooler, sporont, sporule, spotter, spouter, sputter, sternly, stooper, stouter, stoutly, stunter, sutlery, teutons, tonsure, toolers, toolset, tooters, tootler, tootles, tornote, tourney, touters, troupes, tryouts, turtles, tutorly, tylotes, unloose, uproots, utterly, youpons