What is the antonym (opposite) of the word ‘Frivolous’?

Explanation

‘Frivolous’ describes something not having any serious purpose or value, often silly or trivial, so its opposite is ‘serious,’ meaning important and requiring careful thought, as in ‘The board dismissed the frivolous complaint but took the serious one to court.’ The remaining options are all synonyms of ‘frivolous,’ making ‘serious’ the correct antonym. Explore more English MCQs on mcqstutor to keep practicing.