The word creaseproofer 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: 22
Highest Scoring Words With Friends™ Plays In The Letters creaseproofer
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Seven Letter Word Alert: (36 words)
acerose, careers, carpers, coarser, corpora, creaser, creeper, escapee, escaper, forceps, forcers, foresee, poofers, preface, prefers, prerace, proofer, reapers, rearose, reefers, refaces, repaces, reparse, reposer, reproof, rerapes, reroofs, rescope, rescore, respace, roarers, roofers, scooper, scraper, spearer, spoofer