The word fluoridated 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (52 words)
audited, auditor, default, defraud, delator, deltoid, dilated, dilater, dilator, diluted, diluter, direful, drafted, drifted, fadeout, failure, faulted, fiddler, flirted, floated, floater, floured, flouted, flouter, foliate, fruited, furoate, ioduret, lauroid, leotard, loftier, luddite, outdare, outfire, outlead, outlier, outread, outride, radioed, readout, reaudit, refloat, refutal, tearful, toddler, toluide, trailed, trefoil, trifled, trifold, turdoid, uralite