The word phellodendrons 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: 25
Highest Scoring Words With Friends™ Play In The Letters phellodendrons
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Seven Letter Word Alert: (79 words)
dehorns, dendron, depends, deplore, deponed, depones, deposed, deposer, desnood, despond, dollops, doodler, doodles, dresden, drooled, drooped, elopers, endopod, endorse, enrolls, helpers, holders, hollers, honored, honoree, lenders, nephron, nodders, nondeep, nonhero, nonpros, noodled, noodles, onshore, openers, operons, peddler, peddles, penners, phenols, phonons, plodder, pollens, ponders, poodles, presell, presold, reddens, redpole, redpoll, rehoned, rehones, reopens, repolls, reposed, reshoed, resoled, respell, respond, respool, rodeoed, seedpod, shedder, shelled, sheller, sledder, slender, snooded, snooped, snooper, spelled, speller, spender, sphered, spondee, spooled, spooler, spooned, spoored