The word otoplasties 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: 15
Highest Scoring Words With Friends™ Play In The Letters otoplasties
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Seven Letter Word Alert: (40 words)
altoist, aplites, apostle, isolate, isotope, latites, lipases, loosest, oolites, ooplast, opiates, otolite, palsies, pastels, pasties, patties, pilates, pistols, pitless, postils, potties, pottles, soloist, spittle, spotlit, stalest, staples, stoolie, taoists, teapots, tipless, tiptoes, toilets, toolset, tootles, tootsie, topless, topsail, topsoil, tosspot