The word ratiocinations 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™ Play In The Letters ratiocinations
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Seven Letter Word Alert: (55 words)
actants, actions, anionic, anoints, arctans, artisan, atonias, atonics, attains, cantons, cantors, cartons, cartoon, cations, citator, citrons, consort, contain, contort, coronas, cottons, cratons, iconist, incants, incisor, instant, intorts, introns, nations, niacins, nicosia, nonarts, nonriot, notator, notions, octants, oration, racoons, rations, rattons, rattoon, ricotta, risotto, satanic, satiric, stannic, station, straint, tantric, tartans, titanic, torsion, transit, tricots, tsarina