complexity

noun

com·​plex·​i·​ty kəm-ˈplek-sə-tē How to pronounce complexity (audio)
käm-
plural complexities
Synonyms of complexity
1
: something complex
the complexities of the murder trial
2
: the quality or state of being complex
the complexity of the contract

Synonyms of complexity

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Examples of complexity in a Sentence

He was impressed by the complexity of the music. The diagram illustrates the complexity of the cell's structure. He doesn't grasp the complexity of the situation.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Nonetheless, no agreements have been reached yet, partly because of the complexities of the issues surrounding AI, as well as sensitivities around how Hollywood talent and unions would react, the sources said. — Los Angeles Times, 31 Aug. 2026 The Navy effort fits into a wider Pentagon push to reduce complexity across military platforms. — Aamir Khollam, Interesting Engineering, 31 Aug. 2026 At the same time, external pressures are adding another layer of complexity. — Jill Standish, Forbes.com, 30 Aug. 2026 Originally planted to create diversity and complexity in the vineyard, they were blended into the Estate Cabernet Sauvignon and proprietary red blend called Elevage. — Mike Desimone, Robb Report, 30 Aug. 2026 See All Example Sentences for complexity

Word History

Etymology

complex entry 2 + -ity, perhaps after French complexité

First Known Use

1661, in the meaning defined at sense 1

Time Traveler
The first known use of complexity was in 1661

Rhymes for complexity

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Browse Nearby Words

complexionless
complexity
complexity theory
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Cite this Entry

“Complexity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/complexity. Accessed 1 Sep. 2026.

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Kids Definition

complexity

noun
com·​plex·​i·​ty kəm-ˈplek-sət-ē How to pronounce complexity (audio)
käm-
plural complexities
1
: something complex
the complexities of the English language
2
: the quality or state of being complex

More from Merriam-Webster on complexity

Britannica.com: Encyclopedia article about complexity

Last Updated: - Updated example sentences
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