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.
As with most investigations of this scale and complexity, the investigation and review of evidence has continued long after the initial incident occurred. Jesse Sarles, CBS News, 19 June 2026 Points, too, for the solid casting, from the leads’ tricky pivoting from openness to caginess, to the criminally underseen Wasikowska, who navigates maternal complexities of worry and compassion that confound easy pigeonholing. Robert Abele, Los Angeles Times, 19 June 2026 Three of the 10 winners are puros—smokes whose binder, wrapper, and filler are grown in a single country—and each of them offers a focused creative statement, rather than complexity for complexity’s sake. Richard Carleton Hacker, Robb Report, 19 June 2026 Even the most technology-savvy leaders are still pondering and probing where the ceiling is in terms of containing agent sprawl and complexity. Joe McKendrick, Forbes.com, 19 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 22 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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