The word cosmopolitans 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: 24
Highest Scoring Words With Friends™ Play In The Letters cosmopolitans
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Seven Letter Word Alert: (77 words)
actions, atomics, atonics, caisson, campion, capitol, caption, casinos, cassoon, cations, catnips, coalpit, colossi, compass, compost, consist, coolant, copilot, impacts, impasto, implant, inclasp, lampoon, lipomas, lotions, mascots, masonic, miscast, misplan, monocot, moonlit, mosaics, motions, oilcans, oncosis, ooplasm, ooplast, optical, optimal, options, osmotic, palmist, passion, pistols, pistons, plasmin, plasmon, plastic, platoon, plosion, poisons, postils, postman, potamic, potions, psalmic, salmons, saloons, scotoma, sitcoms, socials, soloist, somatic, somonis, spasmic, spastic, spinals, splints, stanols, stoical, tampons, tocsins, tonsils, toolman, topical, topsail, topsoil