The word reprisals 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: (22 words)
airless, aspirer, aspires, lipases, lispers, palsies, paresis, parsers, praiser, praises, raisers, raspers, raspier, repairs, resails, sailers, serials, sierras, sparers, sparser, spirals, spireas