The word hydralazines 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: 28
Highest Scoring Words With Friends™ Play In The Letters hydralazines
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Seven Letter Word Alert: (67 words)
adrenal, aerials, airhead, aliased, already, analyse, analyze, arsenal, arshine, dahlias, daresay, denials, derails, dharnas, dialers, dialyse, dialyze, diazane, diynals, drazels, enlards, halides, handers, handier, handily, handler, handles, hardens, hardily, hayride, hazards, hearsay, heralds, hernial, hernias, hinders, hyaenas, hyaline, inhaled, inhaler, inhales, inlayer, ladyish, landers, lanyard, lizards, nailers, radials, radians, rainday, randily, readily, redials, renails, sandier, sardine, shadier, shadily, shalier, shrined, slander, snailed, snarled, snidely, zanders, zanyish, zenaida