"Simon-pure" is a phrase that is commonly used to describe someone or something that is genuine, authentic, and true. However, there are several other synonyms that can be used to convey the same meaning. Some of these synonyms include "real," "authentic," "genuine," "bona fide," and "legitimate." Each of these words is used to describe something that is true to its identity and is not false or fake in any way. Additionally, words such as "pure," "unadulterated," "wholesome," and "untainted" can also be used to describe something that is free from any kind of impurity or adulteration, which adds to its genuineness.