The word denigratory 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 denigratory
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Seven Letter Word Alert: (63 words)
adoring, adorner, aneroid, angrier, darting, deraign, detrain, dietary, dragnet, drainer, draying, earring, eroding, gardeny, gnarred, godetia, grained, grainer, grander, granite, granted, granter, grinder, groaned, groaner, groined, gyrated, gyrator, ignored, ingrate, ironage, negroid, oranger, orangey, orating, ornater, otarine, randier, rangier, reading, readorn, rearing, redoing, regrant, regrind, retrain, retying, roaring, tangier, tangoed, tardier, tarried, tarring, tearing, ternary, terrain, tindery, tradein, trading, tragedy, trained, trainer, yarding