The word maternalism 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: 19
Highest Scoring Words With Friends™ Play In The Letters maternalism
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Seven Letter Word Alert: (95 words)
aerials, ailment, aliment, amentia, ammines, amnesia, amritas, animals, animate, antlers, antsier, armlets, arsenal, artisan, artsman, artsmen, atresia, elastin, entails, inmates, laments, laminae, laminar, laminas, lariats, latrine, mailers, mailman, mailmen, maimers, malaise, maltier, manlier, mantels, mantles, mantras, marinas, marines, marital, marlins, marlite, marmite, martens, martial, martian, martins, miasmal, minaret, mineral, minters, mismate, misname, mistral, nailers, nailset, nastier, netmail, raiment, ratline, realism, realist, reliant, remails, remains, remints, renails, rentals, reslant, restain, retails, retains, retinal, retinas, salient, saltern, saltier, sealant, seminal, seminar, sirname, slammer, slatier, slimmer, smarten, smartie, stainer, stamina, stammer, sternal, tamales, tramels, tramman, trammel, trenail, tsarina