The word overstuffing 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™ Play In The Letters overstuffing
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Seven Letter Word Alert: (90 words)
efforts, envious, figures, fingers, foister, foregut, foreign, forfeit, forgets, forgive, forints, forties, fortune, fringes, funfest, furtive, goiters, goitres, goniffs, goriest, goutier, governs, grovets, gunfire, gunters, gustier, gutsier, igneous, ignores, infuser, infusor, inverts, nervous, nitrous, norites, nutsier, offsite, orients, ousting, outfire, outgive, outgrin, outings, oversit, reffing, regions, resting, restuff, reusing, revuist, rousing, routine, routing, ruffing, runoffs, rusting, serving, signoff, sniffer, snifter, snuffer, sorting, souring, stiffen, stiffer, stinger, stonier, storing, stourie, striven, stuffer, surfeit, surfing, surgeon, toffier, toffies, tongues, tonsure, touring, triones, turfing, turnoff, uniters, unrivet, versing, version, vertigo, vesting, vetoing, virtues