The word comparability 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: 28
Highest Scoring Words With Friends™ Play In The Letters comparability
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Seven Letter Word Alert: (57 words)
ability, abiotic, ablator, acrobat, airboat, airmail, airplay, albitic, amiably, aplitic, apricot, atropia, barmpot, biliary, bipolar, caltrap, caltrop, cambial, campily, capably, capital, capitol, ciliary, clarity, clipart, coalpit, coaltar, compart, cotylar, crayola, libator, mailcar, marital, martial, mayoral, militar, opacity, optical, optimal, orbital, parboil, partial, patrial, playact, polaric, politic, potamic, primacy, probity, pyloric, pyritic, tapioca, tilapia, topiary, topical, toprail, typical