Nebulous Definition

nĕbyə-ləs
adjective
Cloudy, misty, or hazy.
American Heritage
Webster's New World
Unclear; vague; indefinite.
Webster's New World
Of, relating to, or characteristic of a nebula.
American Heritage
Nebulous is defined as something that has to do with a cloud of gas or dust in space.
An example of nebulous is a star cluster.
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Origin of Nebulous

  • From Middle English, from Latin nebulōsus (“full of mist, foggy, cloudy"), from nebula (“mist, vapour, cloud"), from Proto-Indo-European *nébÊ°os (“cloud, vapor, fog, moist, sky"). Cognate with Ancient Greek νέφος (néphos, “cloud"), Old High German nebul (“cloud, fog") (German Nebel), Old English nifol, neowol (“dark, gloomy, obscure, precipitous, prone"). More at neveling, nuel.

    From Wiktionary

  • Middle English from Latin nebulōsus from nebula cloud nebh- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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