The word saprolites 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: 14
Highest Scoring Words With Friends™ Play In The Letters saprolites
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Seven Letter Word Alert: (88 words)
airless, aplites, apostle, artless, aspires, estriol, isolate, lassoer, lipases, lispers, loiters, lossier, oarless, opiates, ostlers, palsies, palters, paresis, paroles, parties, pastels, pasters, pastier, pasties, pastors, patrols, persist, petrols, pilates, pirates, pistols, pitless, plaster, platers, politer, portals, posters, postils, praises, priests, rapists, realist, relists, repasts, repilot, replait, replots, reposts, resails, resoils, resplit, respots, retails, ropiest, rosiest, sailers, sailors, saltier, satires, seaport, serials, slaters, slatier, slopers, soapers, soapier, sortals, sorties, sparest, spirals, spireas, spoiler, spriest, sprites, stapler, staples, sterols, stories, stripes, tailors, tipless, toilers, topless, toprail, topsail, traipse, triples, tripole