Here are some examples of words using the "-tarian" suffix:
* Vegetarian: A person who does not eat meat.
* Vegan: A person who does not consume any animal products.
* Pescatarian: A person who eats fish but no other meat.
* Lactarian: A person who eats only milk and milk products.
* Ovo-vegetarian: A person who eats eggs but no meat.
* Flexitarian: A person who primarily follows a vegetarian diet but occasionally eats meat.
However, it's important to note that not all words with "-tarian" are related to diet. For example:
* Humanitarian: A person who is concerned with the welfare of humanity.
* Libertarian: A person who believes in individual liberty.
Overall, the suffix "-tarian" is a flexible suffix that can be used to describe a wide range of beliefs and practices.