There are a variety of synonyms for the term "adult content," which refers to material that is not suitable for children and may be sexually explicit or contain other mature themes. Some common synonyms for this type of content include "mature content," "explicit content," "pornographic content," "erotic content," and "NSFW content" (which stands for "not safe for work"). Other terms that may be used to describe adult content include phrases like "X-rated content," "adult entertainment," and "sensitive content." It's important to note that while these terms are often used interchangeably, their nuanced meanings may differ in certain contexts.