The word disafforest 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: 18
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (53 words)
affords, aridest, astride, astroid, daffier, defrost, destaff, differs, disrate, dossier, editors, efforts, fairest, fedoras, fiestas, foisted, foister, forests, forfeit, forties, fosters, frosted, offsets, offside, offsite, resifts, restaff, roadies, roasted, roisted, rosiest, satires, setoffs, sifters, soffits, softies, sortied, sorties, staffed, staffer, steroid, stiffed, stiffer, storied, stories, strides, strifes, taffies, tariffs, tierods, tirades, toffier, toffies