The word courtesans 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: 15
Highest Scoring Words With Friends™ Plays In The Letters courtesans
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Seven Letter Word Alert: (75 words)
acerous, actress, ancress, arouses, ascents, atoners, canoers, canters, cantors, carouse, cartons, casters, castors, causers, cauters, censors, centaur, coarsen, coaster, corneas, cornets, corsets, costars, counter, courses, cratons, cuatros, curates, enactor, encrust, escorts, estrous, natures, nectars, nutcase, octanes, oestrus, ousters, outearn, outrace, reasons, recants, recasts, recoats, recount, rescans, sanctus, saucers, saunter, scanter, scouter, secants, sectors, senator, sources, sourest, stances, stoners, sucrase, sucrose, sunstar, tensors, tonsure, toruses, toucans, trances, treason, trounce, uncarts, uncrate, uncross, unrests, unseats, unsorts, urostea