The term "dwarf hermit" refers to a small and solitary creature. There are several synonyms that could be used to describe this type of animal. For example, one might use "midget recluse" to convey a similar meaning. Alternatively, "miniature loner" or "tiny solitary creature" could also work. Each of these phrases emphasizes the size and isolated nature of the creature in question. Other possibilities might include "diminutive hermit," "petite recluse," or "pocket-sized loner." Regardless of the phrasing chosen, the underlying implication is the same: this is a small and reclusive creature that keeps to itself.