Search Dictionary
Definition of complexity
complexity
/kəmˈplɛksəti/
com · plex · i · ty
Adverb:complexly
•Plural:complexities
•Adjective:complex
complexity Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Top 5k
Syllables
4
complexity Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
The state or quality of being intricate, multifaceted, or composed of many interconnected parts that make something difficult to understand or analyze.
Example
"The sheer complexity of the human brain continues to challenge modern neuroscientists."
2
An intricate, involved, or complicating feature, detail, or factor within a larger system or situation (usually used in the plural).
Example
"Our legal team helped us navigate the many complexities of international tax law."
Synonyms
View all synonyms for complexity Antonyms
View all antonyms for complexity• Rhymes for complexity
• Nearby Words
Word Origin & Etymology
Borrowed in the early 18th century from French complexité, derived from Latin complexus, the past participle of complecti ('to entwine' or 'embrace'), combining com- ('together') and plectere ('to weave' or 'braid').
Cite this Entry
Wordmom. (2026). Definition of Complexity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/complexity