The word maltreating 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: 18
Highest Scoring Words With Friends™ Plays In The Letters maltreating
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Seven Letter Word Alert: (69 words)
agatine, agitate, ailment, aligner, aliment, amentia, animate, elating, garment, gateman, gelatin, geminal, genital, glitter, gmelina, granite, gremlin, ingrate, laminae, laminar, latrine, learing, letting, magenta, magnate, maltier, malting, manager, mangier, mangler, manlier, margate, marital, marlite, martial, martian, matting, melting, migrant, migrate, minaret, mineral, mingler, mintage, nametag, nattier, netmail, nitrate, ragtime, raiment, ratline, rattail, ratting, realign, reaming, regalia, regatta, reliant, retinal, ringlet, tagline, tanager, tangier, tangram, teaming, tearing, tertial, tingler, trenail