The word morphophonemic 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: 34
Highest Scoring Words With Friends™ Play In The Letters morphophonemic
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Seven Letter Word Alert: (25 words)
chipper, chomper, chopper, chorion, hencoop, homomer, hormone, incomer, ionomer, microhm, monomer, moocher, moorhen, moronic, morphic, morphon, omicron, oophore, phonier, phrenic, pincher, popcorn, porcine, propine, propmen