English · Word Candidate

complex

/ˈkɒmplɛks/

Proposed by a contributor, not yet supported by evidence.

Also seen as: complexer · complexest · complexes · complices

Sense 1

Both English Tiếng Việt

Meaning · English

Made up of multiple parts; composite; not simple.

Nghĩa · Tiếng Việt

Được cấu thành từ nhiều phần; tổng hợp; không đơn giản

Machine-translated — suggest a fix

Adjective

Examples

a complex being; a complex idea

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Both English Tiếng Việt

Meaning · English

Not simple, easy, or straightforward; complicated.

Nghĩa · Tiếng Việt

Không đơn giản, dễ dàng hoặc trực tiếp; phức tạp

Machine-translated — suggest a fix

Adjective

Examples

If, when the actual motions of the heavens are calculated in the best possible way, the process is complex and difficult, and if we are discontented at this, nature, and not the astronomer, must be the object of our displeasure.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 3

Both English Tiếng Việt

Meaning · English

A network of interconnected systems.

Nghĩa · Tiếng Việt

Một mạng lưới hệ thống liên kết

Machine-translated — suggest a fix

Noun

Examples

military–industrial complex

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 4

Both English Tiếng Việt

Meaning · English

A collection of buildings with a common purpose, such as a university or military base.

Nghĩa · Tiếng Việt

Một tập hợp các tòa nhà có mục đích chung

Machine-translated — suggest a fix

Noun

Examples

The south polar region of Promethei Planum developed a Bermuda Triangle reputation. Satellites detected intermittent mass concentrations and magnetic field shifts. In 2148, prospectors working near Deseado Crater discovered an underground complex: a Prothean observation post. The odd phenomena were

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “complex” mean?

Made up of multiple parts; composite; not simple.

Is “complex” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.