The word rereading 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: 13
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (24 words)
angered, angrier, deraign, derange, dernier, drainer, earring, enraged, gnarred, grained, grainer, grander, grenade, grinder, nerdier, randier, rangier, readier, reading, rearing, regrade, regrind, reigned, reigner