The word sphericities 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: 20
Highest Scoring Words With Friends™ Plays In The Letters sphericities
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Seven Letter Word Alert: (58 words)
cerises, cesspit, chipset, ciphers, cithers, cresset, etchers, etheric, heiress, heretic, hessite, hissier, itchier, perches, persist, pesters, picrite, pierces, pieties, pissier, pitcher, pitches, pithier, pitiers, precise, presets, priests, receipt, recipes, recites, repitch, resects, reships, respect, respice, respite, resteps, retches, richest, scepter, sceptre, scripts, secrets, septics, species, specter, spectre, spheres, spheric, spicers, spicier, spirits, spriest, sprites, stripes, techies, tipsier, triceps