The word overindulging 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: 26
Highest Scoring Words With Friends™ Plays In The Letters overindulging
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Seven Letter Word Alert: (83 words)
delving, dilogun, dingier, dinging, diviner, divulge, drivein, driving, droning, druggie, dueling, dungeon, dunging, eliding, eluding, environ, eroding, gelding, geogrid, gilding, girding, girling, girning, gliding, gloried, glueing, godlier, grinned, groined, gudgeon, guerdon, guiding, guilder, gurgled, gurning, ignored, indulge, inuendo, inuloid, inuring, ironing, ledging, lending, livider, lodging, longing, longrun, lounged, lounger, louvred, lunging, negroid, nerving, niggler, nondrug, nonevil, nudging, olivine, onliner, redoing, regulon, reining, rending, reunion, ridging, ringing, roguing, roiling, roundel, ruining, undergo, undoing, unlined, unloved, unoiled, uridine, veiling, veining, vending, verging, violing, voiding, vuggier