The word proteolysis 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: 17
Highest Scoring Words With Friends™ Play In The Letters proteolysis
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Seven Letter Word Alert: (72 words)
estriol, isotope, isotype, leprosy, lispers, loiters, loopier, loosest, looters, lossier, lyrists, oolites, orioles, ospreys, ostlers, oysters, persist, petrols, pistols, pitless, politer, polyose, poorest, poroses, porosis, posters, postils, priests, pyrites, relists, repilot, replots, reposts, resoils, resplit, respool, respots, retools, ropiest, rosiest, slopers, soloist, sootier, sootily, sorties, spoiler, spooler, spriest, sprites, spryest, sterols, stoolie, stooper, storeys, stories, stripes, stripey, stylers, stylier, stylise, stylops, systole, tipless, toilers, toolers, topless, topsoil, toyless, triples, tripole, tyloses, tylosis