The word superfetated 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 superfetated
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Seven Letter Word Alert: (82 words)
adepter, astuter, austere, daftest, deafest, dearest, deepest, deepsea, defeats, deftest, defuser, departs, deputes, draftee, epurate, erupted, estuate, euaster, feasted, feature, feeders, fetters, fretted, pasture, patters, perfuse, perused, petards, petered, predate, prefade, pretest, putters, reasted, redates, redtape, reested, refeeds, refused, refuted, refutes, repaste, repeats, reputed, respade, restate, retaped, retapes, retaste, sauteed, sedater, septate, spatted, spatter, speared, speeder, spurted, sputter, started, startup, statued, stature, steeped, steeper, steered, supered, tapered, tapster, tasered, teeters, treated, trusted, trustee, tufters, updater, updates, updraft, uprated, uprates, upstart, upstate, uttered