Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
luminous out
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "luminous out" is not correct and does not convey a clear meaning in written English.
It is unclear when it could be used, as it lacks context and proper grammatical structure. Example: "The stars began to luminous out as the night fell." (This example is incorrect.)
⚠ May contain grammatical issues
News & Media
Arts
Travel
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
1 human-written examples
Black of clothing, bright of melody, the Horrors take synthy new LP Luminous out for an airing (22 Sep-4 Oct, tour starts Norwich Waterfront) … Break out the pointy hats, pop art art-popsters Pet Shop Boys are the third headliners for this year's Festival No 6.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Two performances stand out, luminous and palpable, for their authenticity.
News & Media
A decade ago he was turning out luminous pieces of pure movement: plotless dances that tapped into the rhythms of the human body, like the cadence of his own breathing.
News & Media
In the end, "Luminous Airplanes" turns out to be one of the best 9/11 novels I've read, not least because it is such an understated — almost unstated — addition to the genre.
News & Media
In the theme of Rodrigo's "Concierto de Aranjuez," Mr. Camilo's "Two Much" and a pensive, Debussy-tinged reworking of "Besame Mucho," the two musicians set out luminous melodies and surrounded them with arpeggios or darting guitar lines, so that each phrase spawned ripples like a pebble dropped in a still pond.
News & Media
Armani stuck to his winning formula, sending out luminous lunar variations on the kinds of skinny, peak-shouldered pant suits and clean-lined gowns that have long made him a Hollywood favorite.
News & Media
Some folk left Liverpool for good recently, including an elderly lady who had a profoundly positive effect on my life and a particularly vivid and luminous light went out in Manchester just last week making the world a slightly darker place.
News & Media
(Rosenberg) ★ MoMA PS1: 'Thomas Lanigan-Schmidt Tender Lovee Among the Junk' (through April 1) Mr. Lanigan-Schmidt makes luminous art out of trash: candy wrappers, cling wrap, reflective plastics, aluminum foil, plastic bottles, beer cans and too many other kinds of cheap refuse to list.
News & Media
Thomas Lanigan-Schmidt makes luminous art out of trash: candy wrappers, cling wrap, reflective plastics, aluminum foil, plastic bottles, beer cans and too many other kinds of cheap refuse to list.
News & Media
(Cotter) ★ MoMA PS1: 'Thomas Lanigan-Schmidt Tender Lovee Among the Junk' (through April 7) Mr. Lanigan-Schmidt makes luminous art out of trash: candy wrappers, cling wrap, reflective plastics, aluminum foil, plastic bottles, beer cans and too many other kinds of cheap refuse to list.
News & Media
(Rosenberg) ★ MoMA PS1: 'Thomas Lanigan-Schmidt Tender Lovee Among the Junk' (closes on Sunday) Mr. Lanigan-Schmidt makes luminous art out of trash: candy wrappers, cling wrap, reflective plastics, aluminum foil, plastic bottles, beer cans and too many other kinds of cheap refuse to list.
News & Media
Expert writing Tips
Best practice
When intending to describe something emitting light, use established phrases such as "shining brightly" or "radiating light" instead of "luminous out".
Common error
Avoid using "luminous" as a verb. It functions primarily as an adjective. Instead of saying something "luminous out", describe it as "shining" or "glowing".
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "luminous out" functions as a verb phrase, where "luminous" acts as an adjective modifying an implied action, and "out" indicates direction or completion. However, as Ludwig AI indicates, this phrase is not grammatically correct in standard English. It appears mostly in descriptive contexts.
Frequent in
News & Media
32%
Arts
28%
Science
11%
Less common in
Travel
4%
Encyclopedias
3%
Wiki
1%
Ludwig's WRAP-UP
In summary, the phrase "luminous out" is considered grammatically incorrect in standard English. As Ludwig AI points out, it's best to avoid this construction and opt for more conventional phrases like "shining brightly" or "radiating light". Although it appears in various sources, it is more common to find "luminous" used as an adjective modifying a noun, with "out" serving a separate prepositional function. Using established alternatives ensures clarity and grammatical correctness in writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
shining brightly
Focuses on the intensity of light emitted.
radiating light
Emphasizes the dispersion of light from a source.
emitting light
Highlights the act of producing light.
glowing intensely
Conveys a strong and sustained light emission.
gleaming brightly
Suggests a reflected or shimmering light.
illuminating the exterior
Indicates the act of lighting up an outside area.
casting light outward
Describes the direction and effect of light.
emanating brilliance
Focuses on the exceptional quality of light.
displaying luminosity
Highlights the property of being luminous.
beaming radiance
Suggests a joyful and strong emission of light.
FAQs
How can I properly use the word "luminous" in a sentence?
Use "luminous" as an adjective to describe something that emits light, such as "a luminous glow" or "luminous stars". Avoid using it as a verb.
What is a more grammatically correct alternative to "luminous out"?
Instead of "luminous out", consider phrases like "shining brightly", "radiating light", or "emitting light" depending on the context.
Is "luminous out" considered standard English?
No, "luminous out" is not a standard or widely accepted phrase in English. It's better to use more common and grammatically correct alternatives.
Can you give an example of how "luminous" and "out" can be used correctly but separately in a sentence?
A correct usage would involve "luminous" describing an object and "out" indicating direction or location, such as: "The luminous moon shone out from behind the clouds".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested