The word preciosities 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 preciosities
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Seven Letter Word Alert: (66 words)
cerises, cesspit, coesite, copiers, corpses, corsets, cosiest, coterie, cresset, erotics, erotise, escorts, oecists, pectose, persist, pesters, picrite, pierces, pieties, pissier, pitiers, poesies, poetess, poetics, poetise, posters, precise, presets, priests, process, receipt, recipes, recites, reposes, reposts, rescope, resects, respect, respice, respite, respots, resteps, ropiest, rosiest, scepter, sceptre, scripts, secrets, sectors, septics, soirees, sorties, species, specter, spectre, spicers, spicier, spirits, spriest, sprites, stereos, stories, stripes, tipsier, triceps, tropics