The word corticipetal 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: 22
Highest Scoring Words With Friends™ Play In The Letters corticipetal
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Seven Letter Word Alert: (62 words)
aloetic, aplitic, apricot, article, cacolet, calcite, caliper, caloric, calorie, caltrop, capitol, cattier, ciliate, circlet, citator, citrate, clatter, clipart, clitter, clotter, coalier, coalite, coalpit, coeliac, ectopia, ectopic, erotica, icepail, icteric, lattice, liriope, optical, patriot, pelitic, picrate, picrite, platter, plicate, plotter, polaric, polecat, politer, politic, portlet, practic, prattle, precoat, protect, recital, repilot, replait, replica, retotal, ricotta, tactile, tertial, tipcart, tiptoer, topical, toprail, triplet, tripole