The word viscosimetric 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: 26
Highest Scoring Words With Friends™ Play In The Letters viscosimetric
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Seven Letter Word Alert: (54 words)
ciscoes, cometic, corsets, cosiest, coverts, critics, erotics, escorts, evictor, icteric, isomers, ivories, ivorist, meiosis, meiotic, metrics, miscite, missort, misters, mistier, misvote, mitoses, mitosis, moister, mortise, mossier, motives, oecists, oversit, revisit, rosiest, sectors, seismic, sitcoms, smiters, soccers, somites, somitic, sorties, stimies, stivers, stivier, stomies, stories, strives, vectors, verismo, verisms, verists, victims, victors, visitor, voicers, vomiter