English Reference

Word

protector

Phoneticspro·tec·tor, stress on the second syllable

US/pɹəˈtɛktɝ/

UK/pɹətˈɛktɐ/

Definitions

01a person who guards

B2 · Upper Intermediate Countable noun

n. someone who keeps you safe from danger or harm.

n. a person who protects or guards another person, an object, or a place, either by official assignment or personal initiative.

“The dog was a loyal protector of the family home.”

“Throughout the trial, the witness viewed the lead detective as her sole protector against the threats of the criminal organization.”

Antonyms

02a protective device

B2 · Upper Intermediate Countable noun

n. a piece of equipment that prevents something from being damaged.

n. a mechanical device or physical covering designed to prevent injury, wear, or damage.

“You should use a screen protector to keep your phone from scratching.”

“The electrician installed a surge protector to ensure the sensitive laboratory equipment would not be damaged by power fluctuations.”

Synonyms

03historical regent

C1 · Advanced Countable noun Formal · British English

n. a person who ruled a country while the king was too young or away.

n. a historical title for a person appointed to govern a kingdom during the monarch's minority or absence, notably the Lord Protector.

“Oliver Cromwell was given the title of Lord Protector of the Commonwealth.”

“The Duke served as the young king's protector, managing the affairs of the state until the boy reached his sixteenth birthday.”

Synonyms

Usage

Often followed by the preposition 'of' to indicate what is being guarded.

Real-World Examples

“The US invaded Afghanistan to destroy al-Qaida and topple its Taliban protectors, a war that would drag on for a record 20 years only for the Taliban to return .”
The Guardian 11 Sept 2026
“When in place, it acts as a protector that keeps anything on the left side of the bike from sliding through the frame and getting tangled in the chain.”
Ars Technica 26 Aug 2026

Word family

NOUN

Protector(B2)

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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference