The word agrobiologies 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: 21
Highest Scoring Words With Friends™ Play In The Letters agrobiologies
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Seven Letter Word Alert: (39 words)
aerosol, alibies, baggier, baggies, beggars, blogger, boggier, boggles, boilers, boleros, boogers, boogies, borages, gaolers, garbles, gargles, gerbils, gigolos, girlies, glories, goalies, goobers, googles, googols, goosier, laggers, loggers, obliger, obliges, obligor, orioles, reblogs, reboils, regosol, risible, roseola, saggier, slogger, soggier