The word carbonations 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: 20
Highest Scoring Words With Friends™ Play In The Letters carbonations
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Seven Letter Word Alert: (46 words)
abators, abstain, acrobat, actions, airboat, anoints, arctans, artisan, atonias, atonics, barista, bastion, bosonic, botanic, broncos, cantons, cantors, carbons, cartons, cartoon, cations, citrons, consort, contain, coronas, cratons, incants, introns, nanobot, nations, nonarts, nonriot, notions, obtains, octoban, oration, racoons, rations, robotic, satanic, stannic, strobic, tabasco, tobiano, torsion, tsarina