The word unconstraints 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: 20
Highest Scoring Words With Friends™ Play In The Letters unconstraints
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Seven Letter Word Alert: (79 words)
actions, anoints, artists, atonics, auction, autists, caisson, cannons, cantons, cantors, cartons, casinos, castors, cations, caution, citator, citrons, consist, contain, costars, cousins, cratons, cuatros, curtain, incants, incrust, instant, instars, intorts, introns, intrust, inturns, nations, nitrous, nonarts, nonsuit, notists, octants, outcast, outrant, outsits, racists, rainout, rations, rattons, ricotta, rustics, sanctus, scorias, stannic, statics, statins, station, strains, straint, straits, stratus, suction, suitors, sunstar, suntans, sustain, tannins, tantric, taoists, tocsins, toucans, tourist, transit, tricots, truants, tsarist, uncarts, uncross, unction, unicorn, unsorts, unstain, unstoic