When it comes to antonyms for the word "campiest," there are several options to consider. One possibility is "serious," which is the opposite of the frivolous, exaggerated nature of camp. Another antonym would be "conservative," as camp is often associated with being bold and outrageous. A third option could be "authentic," as camp often involves exaggeration or imitation rather than genuine expression. Additionally, "subtle" could be considered a potential antonym, as camp is typically characterized by over-the-top theatrics and flamboyance rather than understated refinement. Ultimately, the choice of antonym for "campiest" may depend on the context in which the term is being used.