The word discriminator 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 discriminator
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Seven Letter Word Alert: (65 words)
actions, animist, astroid, atomics, atonics, candors, cantors, carotid, carrion, carrots, cartons, cations, citrons, coadmit, conidia, corands, corsair, cratons, crimson, crinoid, diarist, diatoms, diction, diosmin, discant, domains, domatic, donairs, dormant, drastic, iconism, iconist, idiotic, incisor, indicts, inroads, marconi, martini, martins, masonic, mastoid, matrons, microns, midairs, mirador, miscoin, mordant, mortars, nicosia, nimrods, nomadic, nordics, ordains, ramrods, rancors, randoms, rations, satiric, somatic, somitic, soricid, stardom, stridor, triadic, trocars