Which word is synonymous with an unbranded animal?

The term "maverick" refers to an unbranded or unmarked animal, particularly in the context of livestock, such as cattle. This word has historical roots in ranching traditions where it was used to describe animals that had not been claimed or branded by any rancher. The connotation of the term has since expanded to describe individuals who are independent-minded and often go against the conventional norms or practices.

While "stray" could imply an animal that is lost or wandering away from its owner, it does not inherently carry the unbranded connotation that "maverick" does. Similarly, "rogue" suggests a sense of unpredictability or an individual who behaves outside the rules, which doesn't directly align with the concept of an unbranded animal. Lastly, "outcast" generally refers to a person or entity that has been rejected or excluded, which does not connect to the idea of being unbranded in the way "maverick" does.

Thus, in this context, "maverick" is the most accurate synonym for an unbranded animal.