The word viscosimetry 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: 24
Highest Scoring Words With Friends™ Plays In The Letters viscosimetry
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Seven Letter Word Alert: (63 words)
corsets, cosiest, coverts, cytosis, erotics, escorts, evictor, isomers, ivories, ivorist, meiosis, meiotic, metrics, miscite, missort, misters, mistier, misvote, mitoses, mitosis, moister, mortise, mossery, mossier, motives, mycoses, mycosis, myotics, mystics, oecists, oversit, ovicyst, oysters, revisit, rosiest, sectors, seismic, sitcoms, smiters, society, somites, somitic, sorties, stimies, stivers, stivier, stomies, storeys, stories, strives, stymies, trisomy, vectors, verismo, verisms, verists, viceroy, victims, victors, victory, visitor, voicers, vomiter