Complex

/ˈkɒmplɛks/

adjectiveIntermediate🔥Very CommonDescriptive
2 meanings1 idiom/phrase1 question

Definitions

2 meanings
1

Consisting of many different and connected parts.

/ˈkɒmplɛks/

adjectiveneutralIntermediate
Descriptive

Having many interconnected parts

The instructions were too complex for me to follow.

💡 Simply: Imagine a tangled ball of yarn – that's a complex thing! It has lots of parts all mixed up.

👶 For kids: Lots of parts all mixed together!

More Examples

2

She has a complex personality.

How It's Used

Science

"The experiment involved a complex series of chemical reactions."

Engineering

"The bridge's design is incredibly complex."

2

A group of buildings or structures forming a whole.

/ˈkɒmplɛks/

nounneutralBeginner
Place

A group of buildings

The sports complex includes a stadium and swimming pool.

💡 Simply: Imagine several houses or buildings all next to each other – that's a complex!

👶 For kids: Lots of houses or buildings together.

More Examples

2

They live in a large apartment complex.

How It's Used

Real Estate

"The new apartment complex is nearly finished."

Tip:Think of a complex as a community of buildings.

Synonyms & Antonyms

Idioms & expressions

The complex issue of...

A difficult problem with many facets.

"The complex issue of climate change requires global cooperation."

From Latin *complexus, past participle of complēctī 'to entwine, embrace', from com- 'together' + plectere 'to weave'.

The word has been used in its current senses since the 16th century, although its meaning has evolved from a more literal sense of 'entwined' to its modern usage.

Memory tip

Think of a complex as a complicated web.

Word Origin

Original meaning

"to entwine, embrace"

complex problemcomplex sentencecomplex systemcomplex issue

Common misspellings

complxcomplextcompex

Usage

60%Spoken
40%Written