The word propertyless 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: 21
Highest Scoring Words With Friends™ Play In The Letters propertyless
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Seven Letter Word Alert: (72 words)
elopers, eyespot, leprosy, loppers, oppress, ospreys, osselet, ostlers, oysters, pelters, peoples, pepless, pesters, pestles, petless, petrels, petrols, poetess, popeyes, porters, posters, preplot, presets, presort, presser, pretype, propels, prosper, pyropes, pyrrole, replots, reports, reposer, reposes, reposts, repress, resoles, resorps, resorts, respelt, respots, resteps, resters, restore, restyle, retypes, roselet, rosters, slopers, soppers, sorrels, sorters, spryest, steeply, stepper, steppes, stereos, sterols, stopper, storeys, stroppy, stylers, stylops, systole, tersely, toeless, topless, toppers, topples, toyless, tyloses, yelpers