* Old French and Latin Roots: The most widely accepted origin is from the Old French word "furet," which itself likely derived from the Latin word "fur" meaning "thief" or "robber." This ties into the ferret's historical use in hunting, as they were known for their ability to chase and catch prey in burrows.
* Possible Connection to "Ferry": Some sources suggest a connection to the word "ferry" due to the animal's agile movements and ability to "ferry" itself through narrow spaces. However, this link is considered less likely by most etymologists.
So, the name "ferret" ultimately comes from the animal's reputation as a clever and stealthy hunter.