The word sectarians 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: 14
Highest Scoring Words With Friends™ Plays In The Letters sectarians
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Seven Letter Word Alert: (48 words)
acaters, actress, ancress, antsier, arcsine, arctans, arsenic, artisan, ascents, ascites, atresia, canters, carinae, carnies, caseins, casters, certain, cistern, cretins, cristae, incests, insects, inserts, instars, nastier, nectars, raciest, racists, recants, recasts, rescans, restain, retains, retinas, satanic, satires, scanter, searats, seastar, secants, seitans, sestina, sinters, stainer, stances, strains, trances, tsarina