colorless
adjective
col·or·less
ˈkə-lər-ləs 
: lacking color: such as
b
: dull, uninteresting
colorless prose
colorlessly
adverb
colorlessness
noun
Synonyms
Examples of colorless in a Sentence
since we can't decide what color to paint the doghouse, our latest home project remains colorless for the time being
page after page of colorless prose without even one neat turn of phrase
Recent Examples on the Web
Using your naked eye, only the brightest stars are able to activate your cones, which is why fainter ones appear white—that is, colorless.
—
Phil Plait, Scientific American, 25 Aug. 2023
While this gemstone is well-known for its colorless or white variety, there are colored diamonds, such as the famous Hope diamond.
—Olivia Munson, USA TODAY, 1 Apr. 2023
Formaldehyde is a colorless, flammable gas at room temperature.
—Mira Miller, Verywell Health, 27 Oct. 2023
Formaldehyde is a colorless gas that’s flammable at room temperature and is often used in building materials.
—Elizabeth Ayoola, Essence, 20 Oct. 2023
Formaldehyde is a colorless, flammable gas that’s used in a wide variety of household products, including medicines and cosmetics, according to the Centers for Disease Control and Prevention.
—Claretta Bellamy, NBC News, 17 Oct. 2023
Anhydrous ammonia is a clear, colorless gas that is toxic.
—Bill Hutchinson, ABC News, 2 Oct. 2023
The most common contaminants in 2022 were arsenic, which is colorless and odorless; nitrate, which can come from animal manure, fertilizers and sewage leaks; and 1,2,3-Trichloropropane, a carcinogen found in industrial solvents and some pesticides.
—Dorany Pineda, Los Angeles Times, 27 Sep. 2023
According to the Centers for Disease Control and Prevention’s website, carbon monoxide (CO) is a colorless and odorless gas that can be lethal.
—David Chiu, Peoplemag, 18 Sep. 2023
See More
Phil Plait, Scientific American, 25 Aug. 2023
While this gemstone is well-known for its colorless or white variety, there are colored diamonds, such as the famous Hope diamond.
—Olivia Munson, USA TODAY, 1 Apr. 2023
Formaldehyde is a colorless, flammable gas at room temperature.
—Mira Miller, Verywell Health, 27 Oct. 2023
Formaldehyde is a colorless gas that’s flammable at room temperature and is often used in building materials.
—Elizabeth Ayoola, Essence, 20 Oct. 2023
Formaldehyde is a colorless, flammable gas that’s used in a wide variety of household products, including medicines and cosmetics, according to the Centers for Disease Control and Prevention.
—Claretta Bellamy, NBC News, 17 Oct. 2023
Anhydrous ammonia is a clear, colorless gas that is toxic.
—Bill Hutchinson, ABC News, 2 Oct. 2023
The most common contaminants in 2022 were arsenic, which is colorless and odorless; nitrate, which can come from animal manure, fertilizers and sewage leaks; and 1,2,3-Trichloropropane, a carcinogen found in industrial solvents and some pesticides.
—Dorany Pineda, Los Angeles Times, 27 Sep. 2023
According to the Centers for Disease Control and Prevention’s website, carbon monoxide (CO) is a colorless and odorless gas that can be lethal.
—David Chiu, Peoplemag, 18 Sep. 2023
See More
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'colorless.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
14th century, in the meaning defined above
Time Traveler
The first known use of colorless was
in the 14th century
Dictionary Entries Near colorless
Cite this Entry
“Colorless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/colorless. Accessed 2 Dec. 2023.
Copy Citation
Kids Definition
colorless
adjective
col·or·less
ˈkəl-ər-ləs
1
: lacking color
a colorless liquid
2
: dull entry 1 sense 8
colorless writing
colorlessly
adverb
colorlessness
noun
More from Merriam-Webster on colorless
Nglish: Translation of colorless for Spanish Speakers
Britannica English: Translation of colorless for Arabic Speakers
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