complex
B1Pronunciation
UK
- /kəmˈplɛks/adjective
- /ˈkɒmplɛks/adjective
- /ˈkɒmplɛks/noun
US
- /ˈkɑmplɛks/
- /kəmˈplɛks/
Description
- complicated
- made of many parts
- hard to understand
- not simple
- many-sided
Life isn't always simple; sometimes it's complex. Think of a beautifully woven tapestry—lots of different threads coming together to create something stunning, but also making it hard to follow any single strand. That's complexity in action! A complex problem doesn't have an easy answer, and a complex character in a story isn't easily defined. You might describe a machine as complex if it has many moving parts, or a relationship as complex if there are many emotions involved. Sometimes "complex" even refers to a group of buildings with many different parts, like a large apartment complex.
The word "complex" describes something made up of many interconnected parts, making it difficult to understand or analyze easily. It can refer to several different things depending on the context.
Firstly, "complex" often means complicated or intricate. A complex plot in a novel has twists and turns, unexpected characters, and layers of meaning. A complex mathematical equation isn't something you solve in a single step. You might say someone has a "complex personality" if they have many sides and aren't easily categorized.
Secondly, "complex" can describe a group of buildings or structures—like an apartment complex or an industrial complex. These aren't just single buildings; they're collections of interconnected units.
Thirdly, in science (particularly chemistry), a "complex" refers to a compound formed by the combination of a central metal atom with surrounding molecules or ions. This is a more technical usage.
Fourthly, in psychology, a "complex" is a core pattern of emotions, memories, and perceptions organized around a common theme, such as an "inferiority complex."
Finally, "complex" can also describe feelings! You might experience complex emotions—a mixture of joy and sadness, for example—that are hard to untangle.
So, whether you're describing a puzzle, a building, a personality, or an emotion, "complex" signals something with many layers, connections, and challenges to unravel. It's rarely simple!
Examples
- 1
Instructions
The instructions were more complex than I expected.
- 2
Problem solving
We need a simple explanation for a very complex problem.
- 3
Film plot
The movie has a complex plot, so you have to pay attention.
- 4
Emotions
Her feelings about leaving home were complex.
- 5
Public issue
Climate change is a complex issue with no quick fix.
- 6
Technical systems
The company manages several complex computer systems.
- 7
Housing
She lives in a large apartment complex near the station.
Phrase
apartment complex
a group of apartment buildings in one place
- 8
Sports facilities
The new sports complex includes a pool, a gym, and two tennis courts.
Phrase
sports complex
a place with several sports facilities
- 9
Insecurity
He still has a complex about his height.
Pattern
a complex about + personal issue
a strong negative feeling or insecurity about it
Forms and spellings
4 forms open this card.
Main spelling
- complexnounverbadjective
Forms
- complexespluralnounverbadjective
- complexedpast tenseverbnounadjective
- complexing-ing formverbnounadjective