Definition of luminousnext
1
2
3

Synonym Chooser

How does the adjective luminous differ from other similar words?

Some common synonyms of luminous are bright, brilliant, lustrous, and radiant. While all these words mean "shining or glowing with light," luminous implies emission of steady, suffused, glowing light by reflection or in surrounding darkness.

When is it sensible to use bright instead of luminous?

In some situations, the words bright and luminous are roughly equivalent. However, bright implies emitting or reflecting a high degree of light.

When is brilliant a more appropriate choice than luminous?

Although the words brilliant and luminous have much in common, brilliant implies intense often sparkling brightness.

When can lustrous be used instead of luminous?

While the synonyms lustrous and luminous are close in meaning, lustrous stresses an even, rich light from a surface that reflects brightly without glittering.

In what contexts can radiant take the place of luminous?

The words radiant and luminous are synonyms, but do differ in nuance. Specifically, radiant stresses the emission or seeming emission of rays of light.

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of luminous My favorite one involves Kat Ross, an astrophysicist at Curtin University in Perth, Australia who studies distant, luminous galaxies. Phil Plait, Scientific American, 26 June 2026 The observations seem to nail down the theory that clusters of hot, massive, luminous stars in young galaxies in the early universe played a dominant role in ionizing the universe's neutral gas. Keith Cooper, Space.com, 24 June 2026 Makeup artist Tracey Levy utilized Beauty Pie products for the actress’ luminous visage. Julia Teti, Footwear News, 24 June 2026 Blurring bamboo silk powders keep shine in check without dulling skin, while camellia seed oil and antioxidant-rich vitamin E help mature complexions look smooth, hydrated, and naturally luminous. Christa Joanna Lee, Allure, 23 June 2026 See All Example Sentences for luminous
Recent Examples of Synonyms for luminous
Adjective
  • Its prebiotics give skin a glowing, youthful-looking complexion, while hyaluronic acid and watermelon extract deliver a burst of hydration to revive dry, dull skin.
    Melony Forcier, PEOPLE, 27 June 2026
  • Barr’s less-than-glowing assessment of Blanche’s qualifications reads like a grudging employee review that recommends the lowest possible raise.
    Jonathan Chait, The Atlantic, 26 June 2026
Adjective
  • Watson was always known for incredibly quick hands and outstanding bat speed.
    Bernie Pleskoff, Forbes.com, 1 July 2026
  • Another outstanding rug in the lineup this week is this easy-to-clean jute number from Joon Loloi at 60% off.
    Kate McGregor, Architectural Digest, 1 July 2026
Adjective
  • This band may have created millions of fans, but its influence on the 80s rock music is unmistakable.
    Fort Worth Star-Telegram, Fort Worth Star-Telegram, 29 June 2026
  • The warning delivered by this year’s primaries is unmistakable.
    Bobby Zirkin, Baltimore Sun, 29 June 2026
Adjective
  • Whatever political direction Democrats plan to take their party in two years at their National Convention to elect a presidential nominee, Denver offers a shining example of what a city looks like when governance goes right for many decades, led by heart and hard work.
    The Denver Post Editorial Board, Denver Post, 5 May 2026
  • So naturally in a state that treats basketball like a religion and the sport’s biggest stars like royalty, nobody casts a bigger shadow in this community now than the slender 6-foot-6, 196-pound, 19-year-old freshman who changed Final Four weekend with one brilliant shining moment Sunday afternoon.
    Michael Marot, Chicago Tribune, 1 Apr. 2026
Adjective
  • Arlington received a distinguished visitor Saturday as the King of Jordan stopped by during the city's World Cup festivities.
    Doug Myers, CBS News, 27 June 2026
  • Liu, then a Tencent distinguished scientist (a senior title the Chinese tech giant gives to elite researchers) leading the company’s development of its Hunyuan AI model from scratch, saw where the industry was heading.
    Zinnia Lee, Forbes.com, 25 June 2026
Adjective
  • Sure enough, all tires were up and there were no obvious punctures or hissing sounds.
    Doug Turnbull, AJC.com, 28 June 2026
  • One of the first obvious things was that Larry is the guy who told Lincoln to go see that play.
    Ethan Shanfeld, Variety, 27 June 2026
Adjective
  • Listing soon, while the numbers are still dazzling, could be strategic.
    Ashley Capoot,Kate Rooney, CNBC, 26 June 2026
  • Pop these strips on dry teeth while doing skincare or your makeup, and then brace yourself for a dazzling white outcome.
    Izzy Baskette, PEOPLE, 25 June 2026
Adjective
  • The 31-year-old is set to make history as the youngest host of the prestigious award show.
    Mikey Fresh, VIBE.com, 26 June 2026
  • The annual £120,000 ($158,000) honor is the most prestigious museum prize in the nation and the largest of its kind in the world.
    News Desk, Artforum, 26 June 2026

Browse Nearby Words

Cite this Entry

“Luminous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/luminous. Accessed 3 Jul. 2026.

More from Merriam-Webster on luminous

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster