Farraginous is the adjective connected with farrago. In Latin, the stem farragin- and the noun farrago both mean "mixture" and, more specifically, "a mixture of grains for cattle feed." They derive from far, the Latin name for spelt, a type of grain. In the 1600s, English speakers began using farrago as a noun meaning "hodgepodge" and farraginous as an adjective meaning "consisting of a mixture." The creation of the adjective was simply a matter of adding the adjectival suffix -ous to farragin- (although at least one writer had previously experimented with farraginary, employing a different adjectival suffix).
