The term "naive treatment" refers to a simplistic approach that lacks sophistication or experience. There are several synonyms that can be used to describe this concept, such as "unsophisticated method," "uninformed approach," or "unrefined strategy." Other terms that might be used include "basic treatment," "elementary process," or "primitive technique." Each of these alternatives conveys a similar idea: that the approach being used is unsophisticated, simplistic, or unrefined. It is important to choose the right synonym based on the context of the situation to accurately convey the intended meaning.