The word chronological 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: 26
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (30 words)
aircool, alcohol, arching, caching, calling, caloric, chagrin, chloral, chlorin, choragi, choring, chorion, chronic, clangor, clarion, coaling, cochair, colonic, conical, cooling, corolla, coronal, gnocchi, gorilla, laconic, logical, oogonia, organic, raccoon, rolling