The word epiglottises 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 epiglottises
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Seven Letter Word Alert: (53 words)
egoists, egoless, egotist, elegist, elegits, elitist, elogies, elogist, epilogs, epistle, gipsies, glioses, gliosis, glottis, gospels, iolites, oiliest, oligist, osselet, pegless, pelites, pestles, petiole, petites, petless, pieless, pieties, pietist, piglets, pistils, pistols, pitless, poesies, poetess, poetise, postils, potties, pottles, septets, settles, spiegel, spigots, spittle, spotlit, stipite, stogies, teleost, tieless, tipless, tiptoes, toeless, toilets, topless