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Definition of brilliant

brilliant

/ˈbrɪl.jənt/
bril · liant

Adverb:brilliantly
•
Plural:brilliants
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brilliant Lexical Profile

brilliant Game Scores & Validity

• adjective

1

Exceptionally clever, talented, or intelligent.

Example

"The scientist published a brilliant paper that completely transformed the field of quantum physics."


2

Emitting or reflecting a large amount of light; exceptionally bright or radiant.

Example

"The brilliant sunlight blinded him momentarily as he stepped out of the dark cave."


3

British Outstanding, highly impressive, or excellent.

Example

"We had a brilliant time at the jazz festival over the weekend."

Synonyms
View all synonyms for brilliant
Antonyms
View all antonyms for brilliant

• noun

1

A diamond or other gemstone cut with numerous facets in a specific mathematical pattern to maximize its light return and sparkle.

Example

"The jeweler showed her a stunning two-carat brilliant mounted on a platinum band."


2

A large, highly iridescent hummingbird of the genus Heliodoxa, native to the mountainous regions of South America.

Example

"The enthusiastic birdwatcher traveled to the Andes and finally spotted a green-crowned brilliant hovering near an orchid."

Word Nuance & Usage

In North American English, 'brilliant' primarily describes exceptional intelligence or radiant light, whereas in British English, it is pervasively used as an everyday colloquialism to mean 'excellent' or 'great'.

• Rhymes for brilliant

Word Origin & Etymology

Late 17th century: from French brillant 'shining', present participle of briller, from Italian brillare 'to sparkle or whirl'. This likely derives from Latin beryllus 'beryl, crystal'.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Brilliant. In Wordmom Dictionary. Retrieved Nov 6, 2026, from https://wordmom.com/dictionary/brilliant
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