The word astronomers 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: 15
Highest Scoring Words With Friends™ Play In The Letters astronomers
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Seven Letter Word Alert: (59 words)
anomers, armrest, arrests, artsmen, atoners, enamors, errants, maestro, maroons, martens, masters, matrons, mentors, meronts, moaners, monster, mortars, noosers, oarsmen, orators, ornater, osteoma, osteons, ransoms, ranters, rasters, reasons, reroast, reroots, resorts, roamers, roaster, roomers, rooster, rooters, rosters, seamost, searoom, senator, sermons, smarten, smarter, snarers, snorers, snorter, soarers, sooners, soonest, sorters, stamens, starers, stoners, streams, stroams, tearoom, tensors, tonearm, treason, tremors