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.
Depending on complexity, the average taxpayer typically spends about $270 and 13 hours to prepare and file their taxes, the IRS said in 2024. Amanda Greenwood, MSNBC Newsweek, 31 Mar. 2026 The rate card is designed to eliminate the complexity of managing separate carrier pricing structures with a single commercial framework. Glenn Taylor, Sourcing Journal, 31 Mar. 2026 Still, most experts agree that if societies are to design effective policies then the complexity of the situation must be acknowledged. Manuela Castro, CNN Money, 31 Mar. 2026 But if worthiness is measured by the courage to lead, the humility to listen, the wisdom to hold complexity and the sacred responsibility of walking with people through joy, loss and transformation, then women’s rabbinic leadership has already outgrown the narrow metrics of any centralized system. Rabba Sara Hurwitz, Sun Sentinel, 31 Mar. 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 3 Apr. 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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