complexity
gb/kəmplˈɛksɪti/ us/kəmplˈɛksɪti/
B2
英語
~ 6000
語義
0件の語義
名詞
B2
property
1
the quality of being complicated
The state of having many parts and being hard to understand or do.
用法パターン：
the complexity of [something]
よくある間違い：
Learners sometimes say *“the complex of the problem”* when they mean *“the complexity of the problem.”* Use **complexity** as a noun for the state of being complex, and **complex** as an adjective (e.g., *“a complex problem”*).
類義語
complication (Often refers to a specific difficult feature or problem, while 'complexity' is the overall quality of being complicated.)
対義語
simplicity (Describes something that is easy to understand or do because it has few parts or is not complicated.)
コロケーション
the complexity of
|increasing complexity
|high degree of complexity
|deal with the complexity
|recognize the complexity
|underestimate the complexity
テーマ
thinking
|work
|science
|society
|core_vocabulary
例文
- We underestimated the complexity of the project and ran out of time.
- The book explains the complexity of human memory in clear language.
- Modern cities are growing in size and complexity.
- He enjoys the intellectual complexity of philosophy.
- The software hides the underlying complexity from the user.
学習者向け例文
- The complexity of the job surprised me.
- They talked about the complexity of modern life.
- I do not fully understand the complexity of this problem.
- The teacher tried to reduce the complexity of the topic.
- We need more time because of the complexity of the task.
名詞
C1
entity
2
a difficult detailed aspect
A difficult and detailed part of a system or situation, usually one of many problems.
用法パターン：
the complexities of [something]
よくある間違い：
Learners sometimes say *“many complexity”* instead of **“many complexities”** when they talk about several difficult aspects. Use the plural **complexities** for multiple separate difficult details.
類義語
difficulty (More general; does not always suggest many detailed parts the way 'complexities' does.)
対義語
straightforwardness (Suggests that something has no hidden or difficult parts and is easy to deal with.)
コロケーション
the complexities of
|navigate the complexities
|understand the complexities
|legal complexities
|political complexities
|administrative complexities
テーマ
law
|business
|society
|work
|core_vocabulary
例文
- Journalists often simplify the complexities of international trade.
- A good lawyer can help you navigate the complexities of the legal system.
- The course introduces students to the complexities of managing large teams.
- We are only beginning to grasp the complexities of climate change.
- The novel explores the emotional complexities of family life.
学習者向け例文
- She explained the complexities of the tax system.
- It is hard to understand the political complexities in that region.
- We hired a guide to help us with the legal complexities.
- The teacher talked about the social complexities of the internet.
- Students often feel lost in the administrative complexities of the university.
名詞
technical
C1
entity
3
computational complexity of algorithms
In computing and math, a way to show how much time or memory an algorithm needs when the input gets bigger.
用法パターン：
[type] complexity of [algorithm/system]
よくある間違い：
Learners may confuse **time complexity** with simple *speed*. Time complexity describes how running time grows with input size, not just how fast a program feels on one example.
類義語
computational complexity (A more specific technical term that usually refers to the formal theory and measures used in computer science.)
対義語
efficiency (Efficient algorithms achieve the same result with lower complexity in time, space, or other resources.)
コロケーション
time complexity
|space complexity
|computational complexity
|algorithmic complexity
|low complexity
|reduce complexity
テーマ
technology
|science
|education
例文
- This sorting algorithm has a time complexity of O(n log n).
- We chose a different method to reduce the computational complexity of the model.
- Space complexity becomes critical when running on small devices.
- The course covers basic concepts in complexity and computability.
- They compared the complexity of several encryption algorithms.
学習者向け例文
- We study the time complexity of this algorithm in class.
- The new code has lower complexity and runs faster.
- Space complexity is important for programs on phones.
- We want an algorithm with low complexity and good results.
- In computer science, we often talk about complexity using Big-O notation.
名詞
C1
property
4
rich, multilayered quality in art or taste
A rich and interesting quality that comes from many small parts working together, often in art, music, or food.
用法パターン：
the complexity of [artwork/music/flavor/design]
よくある間違い：
Learners sometimes think **complexity** is always negative. In art, music, or food reviews, **complexity** is often positive and means something is rich and interesting, not just difficult.
類義語
depth (Often suggests emotional or intellectual richness; does not always focus on many separate elements the way 'complexity' does.)
対義語
plainness (Suggests something is simple and without many layers or special details.)
コロケーション
musical complexity
|emotional complexity
|flavor complexity
|complexity and depth
|subtle complexity
|rich complexity
テーマ
art
|music
|food
|culture
|arts_entertainment
|food_drink
例文
- Critics praised the emotional complexity of her performance.
- The wine has surprising complexity for such a low price.
- The complexity of the painting becomes clear when you look closely.
- They love the harmonic complexity of jazz music.
- Good game design balances complexity with accessibility.
学習者向け例文
- The movie has a lot of emotional complexity.
- I enjoy the complexity of this jazz song.
- The chef talked about the complexity of the sauce.
- The complexity of the story makes it very interesting.
- Some players like the complexity of this board game.
文法
辞書形
complexity
IPA
GB/kəmplˈɛksɪti/
US/kəmplˈɛksɪti/
音節・強勢
com - plex - ity （3音節）
Stress on 2nd syllable (plex)
活用形
Noun
- Base: complexity
- Plural: complexities, complexity
関連語
Forms
complexities
noun
Core family
Related words
complicated
adjective B1
Negative and opposite forms
Advanced or less common
complexly
adverb
表現
add complexity
1/ˈæd kəmplˈɛksɪti/
fixed phrase
make something more complex
To make something more complex or harder to understand by adding more parts or rules.
例文
- New regulations add complexity to an already difficult process.
- These extra features add complexity without much benefit.
in all its complexity
1/ˈɪn ˈɔl ˈɪts kəmplˈɛksɪti/
fixed phrase
including all difficult parts
Used to say that you are looking at or describing something with all of its difficult and detailed parts, not in a simple way.
例文
- The documentary shows the city in all its complexity.
- We need to face the problem in all its complexity, not just one part.
navigate the complexities
1/nˈævəɡˌeɪt ðə kəmplˈɛksɪtiz/
fixed phrase
deal with many difficult details
To deal with and manage many difficult and detailed parts of a situation or system.
例文
- A good advisor can help you navigate the complexities of the tax system.
- Small businesses often struggle to navigate the complexities of regulation.
the complexities of
1/ðə kəmplˈɛksɪtiz əv/
fixed phrase
many difficult aspects of something
Used to talk about the many difficult and detailed parts of a system, process, or situation.
例文
- The course introduces students to the complexities of international law.
- She writes clearly about the complexities of modern relationships.