The word saprophytes 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: 21
Highest Scoring Words With Friends™ Play In The Letters saprophytes
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Seven Letter Word Alert: (48 words)
apposer, apposes, atrophy, earshot, hapters, hoppers, oppress, ospreys, oysters, pasters, pastors, perhaps, pessary, phrases, posters, pothers, prepays, prophet, pyropes, rashest, repasts, reposts, respots, sappers, seaport, seraphs, shapers, sherpas, shopper, shyster, soapers, sophtas, soppers, sparest, spryest, stayers, stopper, storeys, strappy, strophe, stroppy, tappers, teashop, tephras, therapy, toppers, trashes, yappers