The word mandibulofacial 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: 32
Highest Scoring Words With Friends™ Play In The Letters mandibulofacial
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Seven Letter Word Alert: (46 words)
abmodal, aboulia, aboulic, acaudal, aclinal, acnodal, albinal, albinic, albumin, almanac, alumina, alumnal, bacilli, balafon, bifocal, bifolia, billion, billman, bimodal, binodal, biofilm, bufonid, bulimia, bulimic, bullion, cambial, coalbin, coalman, codilla, conidia, dulcian, fiducia, fluidic, inuloid, lacinia, laminal, lamnoid, malacia, manilla, maudlin, milfoil, million, mindful, monilia, niobium, nomadic