The word secularisms 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™ Plays In The Letters secularisms
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Seven Letter Word Alert: (70 words)
aimless, airless, armless, assumer, assumes, assures, auricle, caesium, carless, causers, celsius, ceriums, cesiums, claimer, classes, clauses, cruises, curials, cussers, eclairs, emulsic, icemass, issuers, lassies, leucism, macules, mailers, malices, masseur, maulers, miracle, miscues, misrule, missals, misuser, misuses, mueslis, muscles, musical, mussels, racisms, realism, reclaim, reclass, recusal, remails, resails, rimless, rumless, sacless, sacrums, sailers, sassier, saucers, saucier, scalers, scalier, scleras, screams, secular, serials, serumal, slicers, sluicer, sluices, smilers, sucrase, surmise, uraemic, uricase