The word gastronomes 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 gastronomes
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Seven Letter Word Alert: (55 words)
amongst, anomers, argents, artsmen, atoners, enamors, engross, garment, garnets, maestro, magneto, magnets, mangers, mangoes, maroons, martens, masters, matrons, megaton, mentors, meronts, moaners, mongers, monster, montage, moorage, noosers, oarsmen, onstage, oranges, oregano, orogens, osteoma, osteons, ransoms, reasons, seamost, searoom, senator, sermons, smarten, sooners, soonest, stagers, stamens, stoners, stooges, storage, strange, streams, stroams, tearoom, tensors, tonearm, treason