The word topographical 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: 27
Highest Scoring Words With Friends™ Play In The Letters topographical
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Seven Letter Word Alert: (41 words)
achiral, acholia, agitpop, aircool, alcopop, alright, apogaic, apricot, atropia, caltrap, caltrop, capital, capitol, carpool, catalog, chariot, choragi, clipart, coalpit, coaltar, copilot, galtrap, galtrop, graphic, haircap, haricot, locator, optical, paralog, partial, patrial, philtra, polaric, porotic, portico, prootic, tapioca, toparch, topical, toprail, trophic