The word superscribing 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: 26
Highest Scoring Words With Friends™ Plays In The Letters superscribing
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Seven Letter Word Alert: (93 words)
bigness, bingers, bringer, brinier, bruiser, bruises, bucines, burgers, burners, burping, burring, bussing, cringer, cringes, crispen, crisper, cruiser, cruises, cuisine, curbing, curries, curring, cursers, cursing, cusping, cussing, gipsies, girners, gripers, gurners, iciness, incises, ingress, inspire, insurer, insures, irenics, issuing, nursers, percuss, piecing, pincers, pingers, pissier, pricers, pricier, pricing, princes, pruners, prussic, purgers, purines, purring, pursers, pursing, pussier, reburns, regrips, reicing, reincur, rescrub, resigns, resnubs, respins, reusing, ringers, rinsers, risings, rubrics, scriber, scribes, sericin, signers, singers, snipers, spicers, spicier, spicing, spinier, spiring, springs, sprucer, spruces, spurges, spurner, suberin, sunrise, surgers, suspire, unriper, uprisen, upriser, uprises