The word redressing 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: 14
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (37 words)
deniers, dernier, derries, designs, desirer, desires, digress, dresser, genders, genesis, girders, girners, greisen, grinder, ingress, nerdier, redness, redress, redries, regress, regrind, reigned, reigner, renders, rerinse, resends, resider, resides, resigns, ringers, rinsers, sedgier, seeding, senders, signees, signers, singers