ragtag

Tag and rag was a relatively common expression in the 16th and 17th centuries, and it was often used pejoratively to refer to members of the lower classes of society. By the 18th century, the phrase had been expanded to "rag, tag and bobtail." That expression could mean either "the lower classes" or "the entire lot of something" (as opposed to just the more desirable parts - the entire unit of an army, for example, not just its more capable soldiers). Something described as "ragtag and bobtail," then, was usually common and unspectacular. "Ragtag and bobtail" was eventually shortened to "ragtag," the adjective we know today, which can describe an odd mixture that is often hastily assembled or second-rate.