What are the opposite words for trifling?

Trifling, meaning something of little importance or value, has several antonyms. One is significant, meaning something that carries great meaning or impact. Another is substantial, which implies that something has importance or value. Valuable is another antonym, which suggests that something is worth the investment or is useful. Weighty is another antonym of trifling, conveying that something carries a significant burden or has a lot of importance. Finally, serious is an antonym meaning something that is important, significant, and requires consideration. Overall, these antonyms of trifling encompass the sense of importance that the word lacks.

Antonym of the day

in-, end-.