English Reference

Word

cyber

Phoneticscy·ber

/ˈsaɪbɝ/

Definitions

01related to the internet

B2 · Computing

adj. relating to computers, the internet, and the digital world.

adj. relating to or characteristic of the culture of computers, information technology, and virtual reality.

“The government is worried about cyber attacks on the country's power grid.”

“The rapid expansion of cyber infrastructure has outpaced the development of international legal frameworks governing digital sovereignty.”

Usage

Often used as a combining form or prefix in words like 'cybercrime' or 'cybersecurity'.

Antonyms

02cybersecurity

C1 · Computing

n. the field of protecting computers and networks from digital attacks.

n. a shorthand for cybersecurity or the digital domain as a theatre of operations.

“She decided to pursue a career in cyber after finishing her computer science degree.”

“Experts in cyber warn that the vulnerability lies not in the software itself, but in the human element of the network.”

Technical

Teaching tip

In professional contexts, 'cyber' is frequently used as a standalone noun to mean the entire field of digital security.

Synonyms

cybersecurityinfosec

03to have cybersex

C1

v. to have sexual conversations or interactions online.

v. to engage in virtual sexual activity or cybersex via digital communication.

“The chat room was full of people looking to cyber with strangers.”

“Early internet culture was often defined by anonymous users attempting to cyber in unmoderated IRC channels.”

Slang · Informal · Vulgar

Usage

Intransitive verb; does not take a direct object.

Real-World Examples

“A small power plant has been shut down during a cyber attack.”
BBC News · 23 Aug 2026
“The attack saw the plant closed for four days, it reports, in what is said to be the "most successful cyber attack of its kind".”
BBC News · 22 Aug 2026

Etymology

Originally from cybernetics, before becoming a stand-alone word.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domain

Internet

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

englishreference.com/q/cyber

English Reference