The word reciprocation 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: 23
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (76 words)
aconite, actinic, airport, apricot, cantrip, caption, carport, carrion, cartoon, centric, certain, citrine, coactor, cocaine, cocopan, conceit, concept, concert, cornice, cornier, coroner, coronet, corpora, correct, creator, crooner, ectopia, ectopic, enactor, erotica, erratic, icteric, inciter, inertia, nepotic, oceanic, oncotic, operant, oration, ornater, otarine, painter, partner, peccant, pertain, picante, picrate, picrite, pointer, porcine, porotic, portico, portion, practic, praetor, prairie, prancer, precoat, pricier, printer, proctor, pronate, prootic, prorate, protean, protein, raccoon, rainier, reactor, repaint, repoint, reprint, retrain, terrain, trainer, trooper