Definition of NEBULOUS

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Nebulous comes from the Latin word nebulosus, meaning "misty," which in turn comes from nebula, meaning "mist," "fog," or "cloud." In the 18th century, English speakers borrowed "nebula" and gave it a somewhat more specific meaning than the Latin version. In English, "nebula" refers to a cloud of gas or dust in deep space, or in less technical contexts, simply to a galaxy. "Nebulous" itself, when it doesn't have interstellar implications, usually means "cloudy" or "foggy" in a figurative sense. One's memory of a long-past event, for example, will often be nebulous; a teenager might give a nebulous recounting of an evening's events upon coming home; or a politician might make a campaign promise but give only a nebulous description of how he or she would fulfill it.

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

Both constructs are nebulous and, in a dynamic economy constantly buffeted by myriad cross currents, impossible for central bankers to control. — Amar Bhidé, WSJ, "Congress Should Set the Fed’s Inflation Target—Ideally at Zero," 6 Nov. 2018 These complicated, nebulous aspects of personality disorders mean that attempting to diagnose them even in a professional setting requires extreme care and caution. — Carolyn L. Todd, SELF, "What Mental Health Experts Want You to Know Before Watching the Buzzy New YouTube Series ‘The Mind of Jake Paul’," 12 Oct. 2018 The nebulous installation will be swirling around from August 11 through October 31 at five different locations. — Lauren Decarlo, Condé Nast Traveler, "What to Do in Boston in August 2018," 8 Aug. 2018 As the world becomes more nebulous, the census-takers succumb to political pressure, faking information missing from their surveys. — The Economist, "China’s statistics are bad. Many criticisms of them are worse," 7 July 2018 Trump is casually accusing his political opponents of treason while arguing that there must be an ironclad quid pro quo for his campaign to have been guilty of a related but more nebulous crime — collusion. — Aaron Blake, Washington Post, "Trump keeps throwing around the word ‘treason’ — which may not be a great idea," 15 May 2018 Missouri’s Drew Lock is another one of the passers being tossed into this currently nebulous first-round category. — Conor Orr, SI.com, "An NFL Fan’s Viewing Guide to the 2019 College Football Season," 13 July 2018 In this smart, incisive page-turner, Alger takes her precise understanding of the financial world and zooms in on the nebulous business of offshore banking. — Steph Cha, USA TODAY, "Smart women get caught up in deadly intrigue in page-turning 'The Banker's Wife'," 2 July 2018 Officially, the other AC casinos are planning sportsbooks, but executives aren’t commenting beyond releasing nebulous statements. — Ed Barkowitz, Philly.com, "Sports betting comes to Atlantic City boardwalk on Thursday with opening of Ocean Resort," 27 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nebulous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.