as in must
something necessary, indispensable, or unavoidable
an extensive grounding in mathematics is a sine qua non for a career in architecture
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Recent Examples of sine qua non
The sine qua non for an economic deal is that Ukrainian leadership wants a peace deal.
—
CBS News, 2 Mar. 2025
Some are fast to embrace the admittedly exciting bold new possibilities of Artificial Intelligence as the future sine qua non of effective schooling.
—Vicki Phillips, Forbes, 15 Jan. 2025
Season 2 fulfills this sine qua non with deceptive ease.
—Alison Herman, Variety, 7 Jan. 2025
Both machines must be designed for ridiculously demanding environments—the sine qua non is ultrafast and ultra-accurate logging and triage of billions of events per second in a typhoon of radiation under magnetic fields otherwise found only in MRI machines.
—Douglas McCormick, IEEE Spectrum, 18 Sep. 2012
See All Example Sentences for sine qua non
CBS News, 2 Mar. 2025
Some are fast to embrace the admittedly exciting bold new possibilities of Artificial Intelligence as the future sine qua non of effective schooling.
—Vicki Phillips, Forbes, 15 Jan. 2025
Season 2 fulfills this sine qua non with deceptive ease.
—Alison Herman, Variety, 7 Jan. 2025
Both machines must be designed for ridiculously demanding environments—the sine qua non is ultrafast and ultra-accurate logging and triage of billions of events per second in a typhoon of radiation under magnetic fields otherwise found only in MRI machines.
—Douglas McCormick, IEEE Spectrum, 18 Sep. 2012
See All Example Sentences for sine qua non
Recent Examples of Synonyms for sine qua non
Noun
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Late hours are a must, bathroom graffiti helps and there should be a fairly high ratio of cheap beer to, well, pretty much everything else.—
Bradley Hohulin,
IndyStar,
7 Nov. 2025
-
Elliott, a native Southerner, said sweet tea is a must for her menu, too.—
Rachel Bernhard,
jsonline.com,
7 Nov. 2025
Noun
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But food hubs also have high startup and operational costs, challenges with maintaining a consistent supply and demand and recruiting skilled leadership and staff, and navigating organizational, regulatory and food safety requirements, Perez said.—
Cristina LaRue,
Arkansas Online,
9 Nov. 2025
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Testing reveals an average power exceeding 200 kW in optimal steady-state conditions, surpassing the energy requirements for heavy-duty vehicles.—
Atharva Gosavi,
Interesting Engineering,
8 Nov. 2025
Noun
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There is a necessity of bearing witness to our times, but there’s something dangerous about jumping on top of the most urgent thing and having that be the work.—
Literary Hub,
Literary Hub,
3 Nov. 2025
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Bedding essentials like cooling mattresses, breathable sheets, and gel pillows are all necessities anytime of year to ensure a sweat-free sleep.—
Mariana Best,
Better Homes & Gardens,
31 Oct. 2025
Cite this Entry
“Sine qua non.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sine%20qua%20non. Accessed 9 Nov. 2025.
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