Propaedeutic is a term usually used in the academic field, referring to preliminary instruction that aims to provide general knowledge and skills for more advanced studies. Antonyms for the word propaedeutic could be categorized into two groups: words that imply insufficient preparation or knowledge, and words that imply expertise or mastery in a specific field. Examples of the former include unprepared, ignorant, inexperienced, and untrained. On the other hand, synonyms for the latter include proficient, accomplished, expert and virtuoso. While propaedeutic is a crucial step in any learning process, knowing the contrasting terms can effectively communicate different levels of proficiency and expertise.