The word counteroffer 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: 23
Highest Scoring Words With Friends™ Play In The Letters counteroffer
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Seven Letter Word Alert: (23 words)
confute, contour, coroner, coronet, counter, crofter, crooner, crouton, current, ecotour, enforce, erector, fortune, functor, offence, oftener, recount, refuter, reoffer, reroute, trounce, turnoff, unerect