There are several antonyms for the word "pre-notation," which means an idea or concept formed beforehand. Some of the opposite words include "post-notation," which refers to an idea formed after the fact, or "no-notation," which means having no prior knowledge or understanding. Other antonyms include "uninformed," "unfamiliar," "unacquainted," "ignorant," and "clueless." Each of these words describes a lack of preconceived notions or ideas and implies a blank slate or openness to new information. In contrast, pre-notation suggests a preconceived bias that may limit one's ability to learn or grow.