The word ulcerating 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: 18
Highest Scoring Words With Friends™ Plays In The Letters ulcerating
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Seven Letter Word Alert: (55 words)
aligner, angelic, article, auricle, carting, cauline, centaur, central, certain, cingula, clinger, crating, curling, curtail, curtain, cutline, elating, eluting, gaunter, gelatin, genital, glacier, glancer, gracile, granite, granule, gruntle, ingrate, latrine, learing, lunatic, neutral, nuclear, ratline, realign, recital, reclang, reliant, retinal, ringlet, tagline, tailgun, tangier, tearing, tingler, tracing, trenail, truncal, unagile, unalert, unalter, unclear, uncrate, uralite, urinate