The word revaluation 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: 18
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (47 words)
aeolian, aileron, aureola, aviator, elation, elution, latrine, lunaria, natural, neutral, otarine, outearn, outlier, outline, outlive, outrave, ovarian, overlit, ovulate, rainout, ratline, reavail, reliant, retinal, retinol, rivulet, routine, toenail, travail, trenail, unalert, unalter, unravel, unrivet, uralite, urinate, valiant, valuate, variant, variate, variola, vaulter, velaria, ventral, violate, violent, virtual