What are the opposite words for triviality?

Triviality, a word that refers to something that is unimportant or insignificant, has a few distinct antonyms. The first antonym would be something of great importance or significance, such as a critical matter or momentous event. Another antonym for triviality could be something that is complex or substantial, suggesting an intricate or weighty matter. On the other end of the spectrum, a humorous or amusing matter could also be considered an antonym for triviality, indicating that something is playful or comical instead of being excessively simple or insignificant. Furthermore, a significant or substantial event or concept could be antonymous with triviality, referring to an event or concept that holds a considerable degree of importance or significance.