The word sapphirines 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: 20
Highest Scoring Words With Friends™ Play In The Letters sapphirines
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Seven Letter Word Alert: (55 words)
airpipe, airship, apprise, arshine, arshins, aspires, aspirin, hairpin, happens, happier, harness, harpies, heparin, hernias, hipness, hippies, hissier, inspire, nappers, nappies, nippers, nippier, pansies, paresis, parsnip, pepsins, perhaps, phrases, pinesap, pissier, praises, raisins, raspish, reships, resnaps, respans, respins, sappers, sappier, seraphs, shapers, sharpen, sharpie, sherpas, shiners, shinier, shipper, shrines, sippers, snapper, snipers, snipper, spinier, spireas, sprains