The word "woodchuck" is a classic example of folk etymology, where an unfamiliar foreign word is reshaped to resemble familiar native terms. It originates from the Algonquian languages of eastern North America, likely from a Proto-Algonquian root such as weč-, related to digging or burrowing animals. English settlers heard a word like otchek or wuchak and reinterpreted it by incorporating the semantically plausible but historically incorrect elements "wood" and "chuck" (an old English verb meaning to throw or toss, sometimes associated with digging). Thus, the modern name is a linguistic adaptation that reflects the animal's habitat and behavior, even though its components are not the true historical morphemes.

This is a simplex word. It is a folk etymology alteration of a word from an Algonquian language (likely Cree wuchak or Ojibwe otchig), with the English spelling influenced by the familiar words "wood" and "chuck".