The word polychromatic 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: 30
Highest Scoring Words With Friends™ Plays In The Letters polychromatic
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Seven Letter Word Alert: (61 words)
accompt, acrylic, aircool, amorphy, apricot, atrophy, caloric, caltrop, camphor, campily, capitol, carpool, chaotic, charily, chariot, charity, chicory, chromic, chyloma, clarity, clipart, coactor, coalpit, cochair, cocoyam, comical, compact, compart, comport, copilot, copycat, cotylar, cryptic, haricot, locator, morphic, mycolic, mycotic, octarch, oocytic, opacity, optical, optimal, philtra, piccolo, polaric, polyoma, porotic, portico, potamic, practic, primacy, prootic, pyloric, taproom, toparch, topiary, topical, toprail, trophic, typical