The word atonalities 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: 13
Highest Scoring Words With Friends™ Play In The Letters atonalities
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Seven Letter Word Alert: (31 words)
aeolian, altoist, atonias, attains, elastin, elation, elision, elitist, entails, inosite, instate, iolites, isolate, latents, latites, leantos, liaison, lionets, lionise, nailset, oiliest, salient, saltate, satiate, sealant, sealion, station, talents, tiniest, toenail, toilets