billion-dollar question

noun

Synonym of million-dollar question.

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million-dollar question
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Meanings

nounbillion-dollar question (plural billion-dollar questions)

plural billion-dollar questions

  1. Synonym of million-dollar question.

    Synonyms: million-dollar question

Synonyms & antonyms

nounSynonym of million-dollar question.

Similar
million-dollar question
Also see
million-dollar question
Cite this entry
APA

billion-dollar question. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/billion-dollar%20question

MLA

“billion-dollar question.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/billion-dollar%20question. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “billion-dollar question,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/billion-dollar%20question.

Source: billion-dollar question on Wiktionary, CC BY-SA 4.0.