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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

  • complicatedly adverb
  • complicatedness noun
  • uncomplicated adjective

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.

Keep Reading on Vocabulary.com

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.

But there may be a more complicated demographic story factoring in.

From Slate • May 4, 2026

Or in my case, it’s more like they’re real and they’re… complicated.

From The Wall Street Journal • May 4, 2026

It is also the first race since the rule changes to the complicated engine-management regulations.

From BBC • May 1, 2026

Efforts to track groups whose hate might turn violent are further complicated by the nebulous, ever-shifting nature of extremism on social media.

From Los Angeles Times • May 1, 2026

Daddy's school was called a very complicated name: Harvard university.

From "All About Sam" by Lois Lowry