The word reformulate 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: 19
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (28 words)
alerter, aureole, emulate, erratum, feature, femoral, femural, floater, flouter, forearm, formula, furoate, maturer, realter, realtor, reflate, refloat, reframe, refutal, refuter, relater, remoter, reroute, tearful, telomer, tramful, treeful, uromere