The word quartermasters 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: 27
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (88 words)
aerates, amateur, armrest, arrears, arrests, assumer, astuter, aurates, austere, equates, erasers, erasure, erratum, estates, estrums, estuate, euaster, marquee, marques, marrers, masques, masseur, masters, matters, maturer, matures, measure, musters, mutates, mutters, quarter, quartet, quasars, rasters, ratters, reamers, remates, request, reseats, restart, restate, restems, resters, resumer, resumes, retaste, reteams, retears, retests, retreat, reutter, satsuma, seamers, searats, seastar, seaters, serrate, setters, smarter, smatter, smearer, squarer, squares, starers, starter, staters, statues, stature, steamer, stratas, stratum, stratus, streams, streets, tartars, tasters, tearers, teasers, tersest, testers, traumas, treater, trustee, truster, turrets, ureases, ureters, utterer