English Reference

Word

vulnerable

Phoneticsvul·ner·a·ble, stress on the first syllable

US/ˈvəɫnɝəbəɫ/

UK/vˈʌlnəɹəbəl/

Definitions

01easily hurt or attacked

B2 · Upper Intermediate

adj. easy to hurt or attack, either physically or emotionally.

adj. susceptible to physical or emotional attack or harm.

“The small village was vulnerable to attacks because it had no walls.”

“After the recent scandal, the politician felt increasingly vulnerable to criticism from both the media and his own party members.”

02security weakness

C1 · Advanced Computing Technical

adj. describes a computer or system that is not protected against hackers or viruses.

adj. susceptible to exploitation by malicious software or unauthorised users due to a flaw in code or design.

“Old computers are often vulnerable to new types of viruses.”

“The security audit revealed that the database was vulnerable to SQL injection attacks due to outdated encryption protocols.”

Usage

Often used with the preposition 'to'.

Antonyms

03at risk of extinction

C1 · Advanced Science Technical

adj. describes a type of animal or plant that is likely to become endangered soon.

adj. categorised as being at high risk of extinction in the wild, though not yet critically endangered.

“Giant pandas were once endangered, but now they are classified as vulnerable.”

“Conservationists are working to protect the habitat of several vulnerable species before their population numbers drop to critical levels.”

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “vulnerable” in context.

Adjective

01. particularly vulnerable

“Elderly people are particularly vulnerable to the flu during the winter months.”

adv + adj

02. vulnerable people

03. vulnerable communities

04. vulnerable to preventable

05. vulnerable to repeated

Real-World Examples

“Experts tell BBC Verify pollution has spread from a ship attacked on 3 August and threatens vulnerable wildlife.”
BBC News 14 Aug 2026
“A vulnerable girl took her life at 16 having faced terror charges and online grooming by neo-fascists.”
The Guardian 13 Aug 2026

Etymology

From Late Latin vulnerābilis (“injurious, wounding”), from Latin vulnerō (“I wound”).

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

Word family

ADJECTIVE

vulnerable(C1)

Domain

Computing

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Common
Level
C1 · AdvancedOxford
Updated

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English Reference