The word hospitalises 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: 18
Highest Scoring Words With Friends™ Play In The Letters hospitalises
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Seven Letter Word Alert: (49 words)
aplites, apostle, asepsis, ashiest, ashless, halites, hapless, haplite, hassles, hatless, hissies, holiest, hoplite, hostels, hostess, hostile, iolites, isohels, isolate, lassies, lassoes, liaises, lipases, loathes, oiliest, opiates, palsies, pastels, pasties, pilates, pistils, pistols, pitless, plashes, possets, postils, sapless, siestas, slashes, sloshes, sophtas, staples, stashes, taphole, tassels, teashop, tipless, topless, topsail