The word greenockites 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: 22
Highest Scoring Words With Friends™ Plays In The Letters greenockites
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Seven Letter Word Alert: (88 words)
cenotes, centers, centres, cistern, citrons, coesite, cognise, coiners, congest, conkers, coreign, corking, cornets, costing, coterie, cretins, cringes, cronies, eeriest, encores, enteric, enticer, entices, entrees, entries, erotics, erotise, estrone, geekier, generic, genetic, gnostic, goiters, goitres, goriest, greisen, ignores, integer, keenest, kernite, kerogen, ketones, necktie, necrose, negroes, norites, notices, octenes, orients, recites, recking, reckons, recoins, reeking, regents, regions, reknits, reknots, reneges, restick, resting, restock, restoke, rickets, rockets, rocking, scenter, scoring, secrete, section, seeking, sincere, snicker, socking, sorting, sticker, stinger, stinker, stocker, stoking, stonier, storing, teenier, tickers, tinkers, treeing, trienes, triones