The word reinvigorating 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: 24
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (77 words)
angrier, antigen, atoning, earning, earring, entrain, environ, eviting, gaining, gaiting, gearing, gentian, gigaton, gingiva, girning, grainer, granite, granter, grating, grinner, groaner, igniter, ignitor, inertia, ingrain, ingrate, intoner, inviter, invitro, ironage, ironing, nearing, nerving, oranger, orating, ornater, otarine, overran, raggier, rainier, raining, rangier, ranging, ranting, rearing, reaving, regnant, regrant, reining, renting, retrain, ringgit, ringing, rioting, roaning, roaring, taggier, tangier, tarring, tearing, terrain, tiering, tinging, tinnier, tonnage, trainer, trigger, vearing, veining, venting, verging, vertigo, vetoing, vinegar, vintage, vintner, vitrine