The word surfeiting 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: 17
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (29 words)
figures, fingers, firings, fringes, gunfire, gunters, gustier, gutsier, igniter, ignites, infuser, niftier, nutsier, resting, reusing, rifting, rusting, sifting, snifter, stinger, suiting, surfeit, surfing, tiering, turfing, unifier, unifies, uniters, unities