brilliant
Noun pluralbrilliants
Pluralbrilliants
- 1Of surpassing excellence; magnificent or outstanding.
The novel's ending was a brilliant stroke that critics praised for years.
Her debut was nothing short of brilliant, earning a standing ovation.
UsageAlready strong praise, so it pairs with absolutely or simply (simply brilliant) more often than with very.
Similarsuperb, excellent, outstanding, magnificent, splendid
Oppositemediocre, poor, terrible, dreadful
Note
Praise strong enough to stand on its own. In Salman Rushdie's The Satanic Verses (1988), Anahita rescues a fumbling compliment with the single word "Brilliant." Praise for the mind behind the work belongs to the "intelligent" meaning.
- 2Showing great intelligence or exceptional mental ability.
His brilliant analysis untangled a problem that had stumped the whole team.
The professor was so brilliant that colleagues sought her opinion on every hard case.
UsageSomeone is brilliant at something: brilliant at math, brilliant at solving puzzles.
Similarintelligent, clever, gifted, smart, talented
- 3Shining or glowing with great brightness.
A brilliant flash of lightning lit up the entire valley.
The polished brass fixtures were brilliant under the gallery lights.
Similarbright, dazzling, radiant, gleaming, glittering
Note
Here the word is still close to its roots. Brilliant lights and a brilliant flash are about light given off or thrown back. The adjective's meanings for minds and achievements are figures built on this one.
- 4
- 5A finely cut gemstone, especially a diamond, shaped with many facets to maximize the light returned through its flat top face.
The appraiser examined the brilliant under a loupe for several minutes.
A single brilliant glittered at the center of the antique brooch.
Note
In verse and fiction from the eighteenth century on, brilliants are the stones set in rings, bracelets and snuffboxes, like the eyes of a jeweled serpent in Letitia Elizabeth Landon's Francesca Carrara (1834).
Less common meanings
- 6Having a sharp, clear, ringing tone.
The new strings gave the violin a brilliant edge in the upper range.
Critics praised the soprano's brilliant top notes.
Similarringing, clear, bright, crisp
Note
Light borrowed for the ear: a brilliant tone cuts through because it is rich in high overtones. Its opposites are mellow and dull. Use it of instruments and voices alike, such as a violin's upper range or a singer's top notes, whenever the quality you mean is clarity and edge rather than warmth.
Checked 7 Nov 2026 · 2 facts
- Prominent higher harmonics give a tone its bright or brilliant quality. phys.unsw.edu.au
- Concentrating energy in higher harmonics can help a ringing voice project over accompaniment. choralfoundation.org
- 7In printing, a 4-point size of type, smaller than diamond and larger than excelsior.
Note
A printer's name from the days when type sizes were called by name rather than numbered. Brilliant sat between excelsior and diamond and was later fixed at four points. Like diamond beside it, it takes no article: matter is set in brilliant, not in a brilliant. Today the term belongs mainly to descriptions of older printing.
Checked 7 Nov 2026 · 3 facts
- Brilliant belongs to the older system of naming type sizes before numerical point sizes. ajhw.co.uk
- Brilliant falls between excelsior and diamond and corresponds to four-point type. en.wikisource.org
- In the printing sense, brilliant is uncountable and is used without an indefinite article in 'set in brilliant'. en.wiktionary.org
- 8To give a diamond the many-faceted cut that turns it into a brilliant.
In short, the diamond owed more to being brillianted and polished, and well set, than to any intrinsic worth or solidity.
1851, The Western Literary Messenger - 9Any of the hummingbird species that make up most of the genus Heliodoxa.
- 10A type of cotton fabric with figures worked into the weave rather than printed on.
Showing meanings only.
Practice
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Origin
Borrowed in the late 17th century from French "brillant," the present participle of the verb "briller," itself from Italian "brillare." This is possibly traced to Latin "berillus, beryllus" (a beryl or gem), from Ancient Greek "bḗrullos" (beryl).
Checked 7 Nov 2026 · 6 facts
- English borrowed brilliant from French brillant in the late 17th century. en.wiktionary.org
- French brillant is the present participle of briller. en.wiktionary.org
- French briller was borrowed from Italian brillare. en.wiktionary.org
- The Italian word possibly derives from Latin berillus or beryllus, meaning a beryl or gem. en.wiktionary.org
- Latin beryllus derives from Ancient Greek bḗrullos. en.wiktionary.org
- Ancient Greek bḗrullos means beryl. en.wiktionary.org