The word fluoridations 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™ Plays In The Letters
Seven Letter Word Alert: (75 words)
airfoil, airlift, astound, astroid, auditor, daltons, diarist, difuran, dilator, disroot, diurnal, donairs, dualist, durians, fanouts, faunist, finials, fistula, flaunts, florins, florist, foldout, forints, frontal, fustian, idolist, indoors, indraft, infolds, infusor, inroads, insofar, insular, inuloid, isodont, lauroid, liaison, lotions, nitrous, nodular, noloads, nostril, odorant, odorful, onloads, oration, ordains, ordinal, outfind, outsail, outsoar, outsold, rainout, rations, riotous, rituals, rotunda, rotunds, sirloin, sundial, sunroof, tailfin, tailors, talonid, tinfoil, tinfuls, tornado, toroids, torsion, trifids, trifold, tundras, unfolds, unloads, urinals