The word counterchecked is playable in Words With Friends™, but 1 blank substituting for the letter 'c' is 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: 28
Highest Scoring Words With Friends™ Plays In The Letters counterchecked
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Seven Letter Word Alert: (60 words)
centred, checked, checker, cheeked, cheered, chocked, chucked, chucker, chunder, chunked, churned, coerced, cohered, concede, concert, conduce, conduct, couched, counted, counter, courted, crochet, crocked, crunode, denture, detuner, eductor, encoder, encored, entered, erected, eructed, notched, notcher, occuder, recheck, rechunk, recount, rehoned, retched, retouch, retuned, tenured, thereon, thorned, throned, thunder, thunked, tokened, torched, touched, toucher, trochee, trounce, trucked, trunked, uncheck, unchoke, uncored, unerect