The word maltreatments 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: 21
Highest Scoring Words With Friends™ Play In The Letters maltreatments
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Seven Letter Word Alert: (82 words)
aerates, ammeter, antlers, armlets, arsenal, artsman, artsmen, attelet, earnest, eastern, elaters, emanate, enamels, enteral, entreat, eternal, laments, lateens, latents, leaners, leanest, letters, maleate, manatee, mantels, mantles, mantras, martens, matters, meanest, melters, metamer, mettles, natters, nearest, neatest, netters, nettles, rattles, realest, relates, relents, remates, remelts, renames, rentals, reslant, resmelt, restate, retaste, reteams, saltate, saltern, sealant, settler, slammer, smarten, smatter, smelter, stammer, starlet, startle, stealer, steamer, sterane, sternal, talents, tamales, tartans, tartest, tartlet, tatters, tattler, tattles, telnets, tenters, ternate, testate, tramels, tramman, trammel, trestle