The word anthophyllite 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: 25
Highest Scoring Words With Friends™ Play In The Letters anthophyllite
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Seven Letter Word Alert: (34 words)
anthill, aplenty, elation, ethanol, haplite, healthy, hilltop, hoplite, hotline, hyaline, hyalite, ineptly, lithely, loathly, nattily, nepotal, opaline, patient, penalty, pentail, pettily, phonily, phthaly, pinhole, plainly, playlet, ptyalin, tallyho, taphole, tenthly, toenail, tonally, topline, totally