The word pleomorphisms 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: 28
Highest Scoring Words With Friends™ Plays In The Letters pleomorphisms
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Seven Letter Word Alert: (63 words)
heroism, homomer, hoppers, hoppler, hopples, hosiers, implore, imposer, imposes, impress, isohels, isomers, lispers, loopier, loppers, lossier, memoirs, moorish, moppers, morsels, mossier, oosperm, opposer, opposes, oppress, orioles, pimples, pomelos, pommels, pompoms, poopers, poroses, porosis, prelims, premiss, promise, propels, propose, reshims, reships, resoils, respool, rimless, ripples, rosehip, shimmer, shipper, shmoose, shopper, shrimps, simmers, simpers, simpler, simples, sippers, slimmer, slipper, slopers, smilers, soppers, soppier, spoiler, spooler