The word counterfactual 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: 27
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (88 words)
account, accrual, actuate, arcuate, aureola, autocar, cacolet, cantref, canulae, canular, careful, cartful, centaur, central, clatter, cloacae, clotter, cloture, clutter, coaltar, conceal, concert, confect, confute, contact, corneal, cornett, coulter, counter, couture, culotte, culture, curacao, cutleaf, cutrate, enactor, factual, falcate, flatout, flatten, flatter, floater, flounce, flouter, flutter, fortlet, fortune, fractal, frontal, functor, funeral, furcate, furcula, furnace, furoate, lactate, lactone, lacunae, natural, neurula, neutral, nuclear, occular, outearn, outface, outrace, outrant, outrate, outturn, recount, refloat, refutal, retotal, tactful, tactual, taunter, teacart, tearful, toccata, toluate, trounce, truncal, tuneful, turnout, unalert, unalter, unclear, uncrate