The word counterchange 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™ Play In The Letters counterchange
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Seven Letter Word Alert: (69 words)
account, accrete, acetone, another, canteen, catcher, catechu, catogen, centaur, chancre, changer, chanter, cheater, cognate, concern, concert, connect, cougher, counter, courage, craunch, crochet, cuneate, earthen, enactor, enchant, enhance, gaunter, gouache, grantee, greaten, hangout, haunter, hearten, hectare, neonate, neutron, noncute, notcher, octarch, outearn, outrace, outrage, reagent, recache, recatch, recheat, recount, reenact, regnant, reteach, retouch, roughen, teacher, thereon, tonnage, toucher, toughen, tougher, tranche, trochee, trounce, uncrate, uneager, unearnt, unearth, uneaten, unerect, unteach