The word diplomatically 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: 29
Highest Scoring Words With Friends™ Play In The Letters diplomatically
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Seven Letter Word Alert: (38 words)
acidity, adipoma, alditol, amyloid, aplitic, campily, capital, capitol, coadapt, coadmit, coalpit, codilla, cotidal, dicotyl, diploma, diptail, dolally, domatia, domatic, idyllic, lamplit, locally, modally, opacity, optical, optimal, payload, playact, ploidal, ploidic, politic, potamic, tapioca, tidally, tilapia, timidly, topical, typical