1
as in complicated
having many parts or aspects that are usually interrelated
this medical device is a complex instrument that requires careful handling complex issues regarding free speech and school discipline
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in intricate
made or done with great care or with much detail
a complex plan for evacuating the city in the event of a natural disaster
Synonyms & Similar Words
Antonyms & Near Antonyms
1
as in facility
a structure that is designed and built for a particular purpose
an apartment complex
Synonyms & Similar Words
2
as in system
something made up of many interdependent or related parts
a complex of government programs designed to assist the needy
Synonyms & Similar Words
as in to complicate
to make complex or difficult
there's no need to complex what should be a simple process for obtaining a building permit
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of complex
David Szondy
june 26,
New Atlas,
26 June 2026
Employees are forming complex, often unhealthy, relationships with AI coworkers, relying on them for personal support, career advice, and emotional validation, roles traditionally filled by human colleagues.
—
Joe McKendrick,
Forbes.com,
26 June 2026
ABC News,
24 June 2026
During construction, the city plans to purchase and renovate space at the Palm Centre complex from the Hialeah Housing Authority to temporarily house the Building Division.
—
Verónica Egui Brito,
Miami Herald,
24 June 2026
See All Example Sentences for complex
Adjective
Hypersonic missiles have been in development for a while now, but these have tended to be extremely complex machines that are mind-bogglingly expensive to make and slow to deploy.
—
David Szondy
june 26,
New Atlas,
26 June 2026
Employees are forming complex, often unhealthy, relationships with AI coworkers, relying on them for personal support, career advice, and emotional validation, roles traditionally filled by human colleagues.
—
Joe McKendrick,
Forbes.com,
26 June 2026
Noun
The plant is one of the largest gas complexes in the world, according to the General Staff.
—
ABC News,
24 June 2026
During construction, the city plans to purchase and renovate space at the Palm Centre complex from the Hialeah Housing Authority to temporarily house the Building Division.
—
Verónica Egui Brito,
Miami Herald,
24 June 2026
See All Example Sentences for complex
Recent Examples of Synonyms for complex
Adjective
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But a closer examination paints a more complicated picture.
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The city also has some of the world’s most complicated rules about air-conditioning installation.
Adjective
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Coben, who also serves as an executive producer, explains the difficulty of creating the intricate inner worlds of each character and their doubts about David, all while dropping hints that reveal David's innocence in each episode.
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The Arabesque necklace, for example, which requires 1,450 hours of work, features intricate rose gold illuminated by 18 fancy rose-cut diamonds.
Noun
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The fire at a cold storage facility in Boyle Heights began burning Wednesday, hours after Bass departed for the dedication of the Barack Obama Presidential Center in Chicago.
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Noncitizens have testified about similar conditions at supposedly temporary ICE detention facilities around the country.
Noun
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The order affected roughly 300 residents, according to evacuation data provided by the Perimeter Map system used by the county.
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The company said those measures were in place because of bad actors who use powerful AI systems for malicious cyber- and biology purposes.
Verb
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The action, set on France’s rugged northern coast, is anchored by teen romance, involves far-right anti-migrant activists, and is complicated by blue goo from space that creates clones—including of the two loopy police officers who investigate.
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Carter further complicates things in last week’s episode, when he drunkly tears an animal mount off the wall during Oreana’s grandmother’s big party at the 10-Petal Ranch.
Adjective
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Options trading for SpaceX started last week, allowing investors to place more sophisticated bets on where the stock is headed next, and quickly saw a surge in interest.
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The crisp white denim is a sophisticated choice for July 4, as well as the rest of summer.
Adjective
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Attached to it is a giant camera capable of capturing a new, detailed image roughly every 40 seconds, combining speed, sensitivity and an exceptionally wide field of view unmatched by any other ground- or space-based telescope.
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At Moderna's Science Day last Thursday, Cramer said the company presented a detailed roadmap for the next decade that highlighted its growing cancer pipeline alongside newer vaccine programs beyond its Covid franchise.
Noun
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Win prizes playing interactive games, network with artists and entrepreneurs and enjoy signature drinks and bar snacks available for purchase.
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The initiative is intended to target transnational criminal organizations, foreign gangs, human trafficking networks and violent criminal aliens operating in the United States.
Cite this Entry
“Complex.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/complex. Accessed 3 Jul. 2026.
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