Adult material is a term used to describe explicit, sexually oriented content that is meant for mature audiences. As such, its antonyms would be words that describe content that is suitable for a wider, more general audience. Examples of antonyms for adult material might include words like family-friendly, child-appropriate, clean, wholesome, or G-rated. These words describe material that is suitable for people of all ages, and that does not contain any graphic or explicit content. While adult material has its place in some contexts, it is important to remember that not all content is appropriate for all audiences, and that there is a wide range of material available that is suitable for more general consumption.