English Reference

Word

brightness

Phoneticsbright·ness, stress on the first syllable

US/ˈbɹaɪtnəs/

UK/bɹˈaɪtnəs/

Definitions

01light intensity

B1 · Intermediate Uncountable noun

n. the quality of being bright or giving off a lot of light.

n. the state or quality of being bright, referring to the intensity of light emitted or reflected by an object.

“You can adjust the brightness of your phone screen in the settings menu.”

“The sudden brightness of the morning sun reflecting off the fresh snow was almost blinding without sunglasses.”

Synonyms

Antonyms

darknessdimnessdullness

02intelligence

B2 · Upper Intermediate Uncountable noun

n. the quality of being clever or quick to understand things.

n. a figurative extension referring to mental acuity, intelligence, or the ability to grasp concepts quickly.

“The teacher was impressed by the brightness of the new student.”

“Her natural brightness was evident in the way she solved the complex logic puzzles long before her peers had even finished reading the instructions.”

Antonyms

stupiditydenseness

Etymology

From Middle English bryghtnes, brightnesse, from Old English beorhtnes (“brightness, splendor”), from Proto-West Germanic *berhtnassī, equivalent to bright + -ness. Cognate with Old High German berahtnessī, berahtnessi (“brightness”).

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

Word family

NOUN

brightness(B1)

ADJECTIVE

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.B1 PreliminaryIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.4.0–5.0TOEFL 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: 3.0–3.544–71TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.550–784EikenEikenTest in Practical English ProficiencyThe English proficiency test from the Eiken Foundation of Japan, widely taken by Japanese students. Grades run from 5 to 1, with Pre-1 and Pre-2 between them.Grade 2
Frequency
Frequent
Level
B1 · Intermediate
Updated

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