The word degenerating 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: 19
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (60 words)
adenine, angered, antigen, arenite, darning, darting, dentine, denting, deraign, derange, deterge, detrain, dragnet, earning, engaged, engined, enraged, entered, entrain, gearing, gentian, grading, grained, granite, granted, grantee, grating, greaten, greened, greeted, grenade, grinned, ingrate, integer, nearing, needier, needing, negated, nitrene, ranging, ranting, reading, reagent, regnant, reigned, rending, reneged, renting, taggier, tangier, tearing, teenage, teenier, tending, tradein, trading, trained, trainee, treeing, triaene