The word polybutylenes 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: 27
Highest Scoring Words With Friends™ Plays In The Letters polybutylenes
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Seven Letter Word Alert: (55 words)
bentley, bluntly, boletes, bonelet, boneset, bullets, bullpen, butenes, butynes, eluents, enstyle, eustely, eustyle, eyebolt, eyespot, leptons, lobelet, lobules, neotype, noblest, obesely, onestep, openest, opulent, outsell, outyell, outyelp, pellets, pentose, penults, plutons, pollens, pollute, polyyne, poteens, pueblos, pullets, pulleys, sellout, soluble, solubly, steeply, stollen, subnote, subplot, subtone, subtype, sunbelt, tensely, toluene, toupees, unbelts, unblest, unbolts, unspell