The word irrealities 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: 12
Highest Scoring Words With Friends™ Plays In The Letters irrealities
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Seven Letter Word Alert: (34 words)
aeriest, airiest, alerter, artsier, earlier, elaters, ileitis, irisate, realers, realest, realise, realist, realter, rearise, relater, relates, reliers, retails, retears, retiles, retires, retrial, retries, saltier, seriate, serrate, siltier, slatier, stealer, sterile, tarries, tearers, tearier, trailer