What is the opposite of 'interminable'?

The term 'interminable' describes something that seems endless or is perceived as never-ending, often with a negative connotation, suggesting boredom or annoyance with the duration. Therefore, the opposite of 'interminable' would reflect the idea of something that is short or fleeting.

The choice 'brief' is indeed the correct opposite, as it conveys a sense of conciseness and temporariness, clearly contrasting with the notion of something lasting for an indefinite period. Understanding this distinction clarifies why 'brief' stands out as the appropriate antonym for 'interminable.'

The other choices, while they may suggest time duration, do not accurately represent the opposite of 'interminable.' 'Prolonged' and 'extended' imply an increase in length, thus reinforcing the idea of something lasting too long, while 'continuous' suggests an uninterrupted flow, again aligning more closely with 'interminable' rather than opposing it.