The word combinational 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: 25
Highest Scoring Words With Friends™ Play In The Letters combinational
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Seven Letter Word Alert: (30 words)
abiotic, albinic, albitic, alicant, ambiant, anionic, antlion, bitcoin, boatman, botanic, cambial, cannoli, cannolo, coalbin, coalman, coatman, contain, coolant, lacinia, monilia, moonlit, nanobot, nominal, noncola, nonmail, octoban, oolitic, tabooli, tobiano, toolman