The word unadoptable 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: 21
Highest Scoring Words With Friends™ Play In The Letters unadoptable
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Seven Letter Word Alert: (37 words)
abalone, ablated, abluent, abluted, adulate, bandlet, bloated, blunted, butanol, datable, doublet, lobated, lunated, nepotal, notable, notepad, opulent, outbade, outbled, outlead, outleap, outplan, paenula, planeta, planted, plateau, potable, poundal, tableau, taboule, tadpole, tunable, unabate, unbaled, undealt, unlobed, untaped