The word rhodonites 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 rhodonites
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Seven Letter Word Alert: (51 words)
dehorns, dehorts, dishorn, disroot, dithers, editors, erosion, heroins, hinders, histone, hoisted, honored, hornets, hotrods, indoors, indorse, inshore, isodont, norites, onshore, orients, osteoid, reshoot, rodents, roisted, roosted, rosined, shirted, shooter, shorted, shorten, shrined, snooted, snorted, soothed, soother, sootier, sortied, steroid, stonier, storied, thiones, thorned, throned, thrones, tierods, tinders, toonies, toroids, torsion, triones