When it comes to describing someone who has the ability to secrete or produce a certain substance, there are several synonyms to choose from. For example, the word "excretor" can be used to describe someone who secretes waste or toxins from their body. Similarly, the term "producer" can be used to refer to someone who generates a specific product or material, such as milk or oil. Other synonyms for "secretor" might include "discharger," "emitter," or "segregator." Ultimately, the choice of word will depend on the specific context and the nature of the material being secreted or produced.