The word vasoconstrictor 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: 26
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (74 words)
accosts, actions, arctics, artists, atonics, caisson, cantors, carrion, carrots, cartons, cartoon, casinos, cassoon, castors, cations, cavorts, citator, citrons, coactor, coarcts, cocoons, consist, consort, contact, contort, convict, coronas, corsair, costars, cottons, cratons, instars, intorts, notator, notists, octants, oncosis, oncotic, oration, orators, ovation, raccoon, racists, racoons, rancors, rations, rattons, rattoon, ricotta, risotto, rotator, saviors, scoriac, scorias, statics, statins, station, strains, straint, straits, tactics, tantric, taoists, tictacs, tictocs, tocsins, torsion, tractor, traitor, transit, tricots, trocars, tsarist, victors