The word disinheriting 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: 20
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (63 words)
denting, dentins, dieting, dingier, dingies, dinners, dinting, dirties, dishing, dithers, ditsier, editing, endings, grinned, herding, hidings, hinders, hinnies, hinting, ignited, igniter, ignites, indents, inditer, indites, inherit, insider, insight, intends, interns, iridise, nesting, nightie, nitride, reining, rending, renting, resight, resting, ridings, righted, rinsing, sending, shindig, shinier, shining, shinned, shirted, shrined, sighted, sighter, stinger, tending, tensing, thinned, thinner, tidiers, tidings, tiering, tigrish, tinders, tinners, tinnier