Moderate A challenging or difficult question, often used to describe a situation of perplexity. Clear All
2 Example Sentences Showcasing the Meaning of 'Sixty-four Thousand Dollar Question'
Deciphering the ancient hieroglyphs turned out to be the sixty-four thousand dollar question in the archaeology research project.
Identifying the rare species of orchids hidden in the rainforest canopy became the sixty-four thousand dollar question for the botanists.
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