The word refrigerates 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: 17
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (54 words)
aeriest, aigrets, artsier, eagerer, eeriest, faeries, fairest, ferrari, ferrets, ferries, ferrite, fraters, freesia, frigate, gaiters, garrets, garters, gearset, grafter, graters, greaser, greater, greeter, grister, rafters, rearise, reefers, reefier, refires, refrets, refries, regears, regraft, regrate, regreet, regrets, restage, retears, retiree, retirer, retires, retrees, retries, seriate, serrate, stagier, steerer, stirrer, tarrier, tarries, tearers, tearier, terrier, triages