The word numismatology 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: 26
Highest Scoring Words With Friends™ Play In The Letters numismatology
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Seven Letter Word Alert: (77 words)
agonism, agonist, agoutis, alimony, amongst, amounts, amusing, anglist, atomism, autonym, galoots, gamonym, gauntly, gliomas, gnomist, gustily, gymnast, isogony, isonomy, lagoons, lasting, layouts, logouts, looming, loosing, looting, lotions, lousing, lusting, magnums, maligns, malting, mangily, matings, mauling, moating, moistly, molting, mongols, moonlit, mooting, motions, moulins, mousily, mousing, mustang, mustily, nastily, ominous, ousting, outgain, outings, outlays, outmans, outsail, outsang, saintly, salting, slating, slaying, solanum, soloing, sootily, sooting, stagily, staying, stonily, stygian, styling, stylion, summing, syntagm, tailgun, tooling, toolman, tsunami, unsilty