The word sanctuaries 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: 16
Highest Scoring Words With Friends™ Play In The Letters sanctuaries
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Seven Letter Word Alert: (84 words)
acaters, actress, acuates, ancress, antsier, arcsine, arctans, arcuate, arsenic, artisan, ascents, ascites, atresia, aunties, aurates, canters, carinae, carnies, caseins, casters, causers, cauters, centaur, certain, cistern, cretins, cristae, cruises, curates, curtain, encrust, incests, incrust, insects, inserts, instars, insures, nastier, natures, nautica, nectars, nutcase, nutsier, raciest, racists, recants, recasts, rescans, restain, retains, retinas, rustics, sanctus, satanic, satires, saucers, saucier, saunter, saurian, scanter, searats, seastar, secants, seitans, sestina, sinters, sinuate, stainer, stances, strains, sucrase, suiters, sunrise, sunstar, sustain, trances, tsarina, uncarts, uncrate, uniters, unrests, unseats, uricase, urinate