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Synonyms

complicated

American  
[kom-pli-key-tid] / ˈkɒm plɪˌkeɪ tɪd /

adjective

  1. composed of elaborately interconnected parts; complex.

    complicated apparatus for measuring brain functions.

  2. difficult to analyze, understand, explain, etc..

    a complicated problem.

    Synonyms:
    knotty, tangled, involved

complicated British  
/ ˈkɒmplɪˌkeɪtɪd /

adjective

  1. made up of intricate parts or aspects that are difficult to understand or analyse

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of complicated

First recorded in 1640–50; complicate + -ed 2

Explanation

When things get complicated, they are no longer simple and straightforward. If you are asked a question that would require a long, detailed answer, you might just say, "It's complicated." The word complicated came about in the 1640's to mean "tangled" or "difficult to unravel." This makes sense, considering it came from the Latin verb complicāre, meaning "to fold together." Consider that something with many folds is more complicated than something flat. Novelist Robert Ludlum said, "Life is extremely complicated," but Confucius long ago suggested that "Life is really simple, but we insist on making it complicated." Just having those two opposing viewpoints indicates how complicated life can be.

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Vocabulary lists containing complicated

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Doing so, however, would allow US and Iranian teams to discuss the far more complicated and technical issues at play, particularly about Iran's nuclear programme and its remaining stockpile of highly enriched uranium.

From BBC • May 28, 2026

Reports cite a range of complicated factors for the restraint, from apathy to technology-induced incapacity.

From Salon • May 28, 2026

Even before the complaints of customer-service problems, cardholders said the rewards structure on the revamped Bilt cards was overly complicated.

From The Wall Street Journal • May 28, 2026

“This stuff is a lot more complicated than you think it is, and there’s a lot going on behind the scenes,” he says.

From MarketWatch • May 27, 2026

Their details were complicated enough that one of Morgan Stanley’s own subprime mortgage bond traders said, “I don’t think any of the people above Howie fully understood the trade he had on.”

From "The Big Short" by Michael Lewis

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