The word frequentative 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: 31
Highest Scoring Words With Friends™ Play In The Letters frequentative
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Seven Letter Word Alert: (38 words)
antique, aquifer, arenite, enquire, entreat, evitate, fainter, fattier, feature, fervent, fireant, furtive, iterate, nattier, nitrate, nuttier, quartet, querent, quieten, quieter, quintet, quitter, requite, reunite, revenue, taunter, teenier, tentier, ternate, trainee, triaene, tuftier, unreeve, unrivet, urinate, uterine, venture, veteran