complexity

noun

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

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.
Deal outline The complexity of a new grand bargain became apparent when the Alameda County Board of Supervisors in May released and approved a non-binding term sheet. Daniel Borenstein, Mercury News, 12 June 2026 This significantly reduces the cost and complexity of collecting training data for humanoid robots. Jijo Malayil, Interesting Engineering, 12 June 2026 Neither overly sentimental nor unsympathetic, Albert and Allen Hughes craft realistic characters with more nuance and complexity than traditional gangster films. Eric Farwell, Entertainment Weekly, 12 June 2026 There's a limit to how much complexity people can meaningfully understand before comprehension starts giving way to assumption. Doug Shannon, Forbes.com, 12 June 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

Browse Nearby Words

Cite this Entry

“Complexity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/complexity. Accessed 14 Jun. 2026.

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

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