The word seductively 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: 23
Highest Scoring Words With Friends™ Play In The Letters seductively
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Seven Letter Word Alert: (28 words)
deceits, deciles, delicts, devices, dilutes, distyle, divulse, ductile, ductily, duelist, dulcets, dustily, educive, elusive, eustely, eustyle, evicted, evilest, evulsed, eyelids, eyeslit, leucite, lucites, seclude, seedily, sluiced, sylvite, vesicle