Antonyms for the word "am significance" would include terms such as unimportant, trivial, insignificant, and inconsequential. These words refer to something that has no great importance or impact, and would be the opposite of having significance. Other antonyms might include words like triviality, nonentity, or irrelevance, all of which suggest something that is insignificant, unremarkable, or not worth considering. In contrast, synonyms for "am significance" might include words like weight, importance, relevance, or significance, all of which suggest that something is meaningful or significant in some way. Ultimately, the choice of antonym will depend on the context and how the word "am significance" is being used.