nebulous

adjective

neb·​u·​lous ˈne-byə-ləs How to pronounce nebulous (audio)
1
: of, relating to, or resembling a nebula : nebular
2
: indistinct, vague
… this nebulous thing called jazz.Josef Woodard
… the nebulous region between mere suspicion and probable causeW. R. LaFave & J. H. Israel
The plan is too nebulous.
nebulously adverb
nebulousness noun

Did you know?

Nebulous may sound other-worldly—after all, it’s related to nebula, which refers to a distant galaxy or an interstellar cloud of gas or dust—but its mysteriousness is rooted in more earthly unknowns. Both words ultimately come from Latin nebula, meaning “mist, cloud,” and as far back as the 14th century nebulous could mean simply “cloudy” or “foggy.” Nebulous has since the late 17th century been the adjective correlating to nebula (as in “nebulous gas”), but the word is more familiar in its figurative use, where it describes things that are indistinct or vague, as when Jack London wrote of “ideas that were nebulous at best and that in reality were remembered sensations.”

Examples of nebulous in a Sentence

These philosophical concepts can be nebulous. made nebulous references to some major changes the future may hold
Recent Examples on the Web This group-chat-message-dump approach leaves nothing but a cluttered narrative backstory and nebulous production where the experience of being able to listen and — at the very least — enjoy a great melodic arrangement should be. Larisha Paul, Rolling Stone, 23 Apr. 2024 Out of hubris or audacity, Gandhi wants to persuade people to consider lofty things like morality and love, indispensable values that nonetheless make for nebulous campaign platforms. Samanth Subramanian Vikas Adam Tanya Pérez Zachary Mouton, New York Times, 20 Apr. 2024 See all Example Sentences for nebulous 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nebulous.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin nebulosus misty, from nebula

First Known Use

1674, in the meaning defined at sense 1

Time Traveler
The first known use of nebulous was in 1674

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Dictionary Entries Near nebulous

Cite this Entry

“Nebulous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nebulous. Accessed 30 Apr. 2024.

Kids Definition

nebulous

adjective
neb·​u·​lous ˈneb-yə-ləs How to pronounce nebulous (audio)
1
: of, relating to, or resembling a nebula
2
: not clear or sharp : vague
nebulously adverb
nebulousness noun

More from Merriam-Webster on nebulous

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