Heresiology, or the study of heresy, has been a long-standing topic throughout history. However, if you are looking for alternative terms to improve your writing or expand your vocabulary, then there are some synonyms one can use. For instance, heterodoxy, nonconformity, blasphemy, apostasy or dissidence are interchangeable words that can be used instead of heresiology. Additionally, terms such as unorthodoxy, sectarianism, non-compliance or disobedience can also be employed depending on the context and tone of the writing. Using these synonyms in place of heresiology can enhance the overall effectiveness and fluidity of one's writing and diversify the words used to communicate the same idea.