mustelid

Synonym discussion

Sense: noun/1

Mustelid is a scientific group word. Use it when you want to talk about otters, weasels, ferrets, badgers, and related animals as one family. Weasel is narrower because it names one kind inside that family, not the whole group. Otter is also narrower and usually points to members that live in or near water. Carnivore is much broader because it includes many meat-eating animals outside this family, and mammal is broader still. In a zoo report, you might write "The mustelid showed strong digging behavior." In everyday speech, people usually say the animal name instead, such as "otter" or "weasel."

Etymology

Mustelid comes from New Latin Mustelidae, the scientific family name for weasels and their relatives. That family name goes back to Latin mustela, meaning "weasel." English borrowed mustelid later as a scientific term, so it appears mainly in biology, wildlife writing, and zoo labels rather than everyday conversation.