The word philatelically 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: 28
Highest Scoring Words With Friends™ Play In The Letters philatelically
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Seven Letter Word Alert: (29 words)
acylate, alethic, allelic, aplitic, capital, chaplet, cheaply, ciliate, cyathia, ethical, haplite, helical, hellcat, hepatic, hyalite, icepail, lacteal, lithely, patella, pelitic, phallic, pithily, placate, playact, playlet, plicate, tilapia, typical, yachtie