The word hostelries 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: 13
Highest Scoring Words With Friends™ Play In The Letters hostelries
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Seven Letter Word Alert: (35 words)
erotise, estriol, heiress, heroise, hessite, heteros, holiest, holster, hosiers, hostels, hostile, hostler, isohels, loiters, lossier, osselet, ostlers, relists, reshoes, resoils, resoles, retiles, roselet, rosiest, shelter, slither, soirees, sorties, stereos, sterile, sterols, stories, tieless, toeless, toilers