complexity
C1Formal to Neutral
Definition
Meaning
The state or quality of being intricate, complicated, or made up of many interconnected parts.
The degree to which something is complex, often implying difficulty in understanding, analyzing, or managing due to the number and relationships of its components.
Linguistics
Semantic Notes
Primarily a noun denoting an abstract quality. Implies a system or situation with multiple interacting elements, often leading to unpredictability or difficulty. Can be neutral (descriptive) or carry a negative connotation (unwanted complication).
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling and pronunciation are consistent.
Connotations
Identical in both varieties.
Frequency
Comparably high frequency in academic, technical, and business contexts in both BrE and AmE.
Vocabulary
Collocations
Grammar
Valency Patterns
complexity of [NOUN PHRASE]complexity involved in [VERB-ING]complexity that [CLAUSE]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A maze of complexity”
- “Layers of complexity”
Usage
Context Usage
Business
Refers to the intricate nature of markets, regulations, or organisational structures. 'The complexity of the supply chain requires robust management software.'
Academic
Describes sophisticated systems in sciences, humanities, or abstract models. 'The paper explores the complexity of social networks and their emergent properties.'
Everyday
Used for complicated situations, instructions, or relationships. 'I wasn't prepared for the complexity of planning a wedding.'
Technical
Specific, measurable attribute in fields like computing (algorithmic complexity), engineering, or systems theory. 'The time complexity of this sorting algorithm is O(n log n).'
Examples
By Part of Speech
verb
British English
- The new regulations will complexity the planning process.
- We mustn't complexity matters further at this stage.
American English
- The software update unnecessarily complexifies the user interface.
- Adding more rules will only complexify the situation.
adverb
British English
- The system is complexity designed.
- The arguments were complexity interwoven.
American English
- The data is complexity structured.
- The plot unfolds complexity.
adjective
British English
- It's a highly complexity issue with no easy answers.
- The report was criticised for its complexity language.
American English
- The process is unnecessarily complexified.
- We are dealing with a complexity-rich environment.
Examples
By CEFR Level
- This game has too much complexity for me.
- I don't understand the complexity of the rules.
- The complexity of the instructions made the task difficult.
- He explained the complexity of the problem in simple terms.
- We need to appreciate the full complexity of the environmental crisis before proposing solutions.
- The complexity of modern computer chips is astonishing.
- The negotiations were stalled by the sheer complexity of the trade agreement's clauses.
- His research delves into the nuanced complexity of cognitive processes in bilingual individuals.
Learning
Memory Aids
Mnemonic
Think of a COMPLEX city (complex-city) with its tangled roads, diverse people, and interconnected systems — all embodying COMPLEXITY.
Conceptual Metaphor
COMPLEXITY IS A TANGLE/KNOT; COMPLEXITY IS DEPTH/LAYERS; COMPLEXITY IS A MAZE.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation to "сложность" in all contexts, as the Russian word can also mean "difficulty" without the component of interconnected parts. 'Complexity of a problem' is not just its трудность, but its многокомпонентность and взаимосвязи.
- Not to be confused with "комплекcность" (comprehensiveness).
Common Mistakes
- Using as a countable noun incorrectly (e.g., 'a complexity' is rare; usually 'a complexity of the system' or uncountable 'the complexity').
- Confusing with 'complication' (which often implies a problem that makes a situation worse).
Practice
Quiz
In which context is 'complexity' LEAST likely to be used?
FAQ
Frequently Asked Questions
It is primarily descriptive/neutral. Context gives it connotation. In engineering, 'necessary complexity' can be positive; in management, 'unnecessary complexity' is negative.
'Complexity' describes a state of having many connected parts. 'Complication' is often a problem or difficulty that arises, making a situation more complex or worse. A situation has inherent complexity; a new problem adds a complication.
Yes, but it's less common. The plural 'complexities' refers to the various intricate aspects or features of something. E.g., 'We must consider all the legal complexities of the case.'
In computer science, it's a measure of the amount of computational resources (like time or memory) an algorithm requires relative to the size of its input, often expressed using Big O notation (e.g., O(n²)).
Collections
Part of a collection
Abstract Thinking
B2 · 49 words · Words for ideas, reasoning and intellectual concepts.
Critical Thinking
C1 · 49 words · Vocabulary for structured logical reasoning and analysis.
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