[fog-ee, faw-gee]

adjective, fog·gi·er, fog·gi·est.

thick with or having much fog; misty: a foggy valley; a foggy spring day.
covered or enveloped as if with fog: a foggy mirror.
blurred or obscured as if by fog; not clear; vague: I haven't the foggiest notion of where she went.
bewildered; perplexed.
Photography. affected by fog.

Origin of foggy

1520–30; fog2 + -y1; orig. meaning marshy, thick, murky
Related formsfog·gi·ly, adverbfog·gi·ness, nounun·fog·gy, adjective
Can be confusedfoggy fogy

Synonyms for foggy

3. fuzzy, hazy, dim, murky, muddled. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for foggiest

Contemporary Examples of foggiest

  • A crackdown on a Tiananmen scale is on many minds, even if no one has the foggiest idea what Beijing is planning.

    The Daily Beast logo
    Hong Kong Between Calm and Chaos

    Ben Leung

    October 3, 2014

  • And I would bet that if you asked Americans about it today, no more than 20 percent would have the foggiest idea what it was.

    The Daily Beast logo
    Hillary Derangement Syndrome

    Michael Tomasky

    April 4, 2013

Historical Examples of foggiest

  • Have you got the foggiest idea of what in hell she's yammering about?

    Masters of Space

    Edward Elmer Smith

  • Should he tell her that he was not her husband, that he didnt have the foggiest notion of who he was?

  • "The natives haven't the foggiest idea of hygiene," said the doctor finally.

    Banked Fires

    E. W. (Ethel Winifred) Savi

  • And I went there without the foggiest idea of indulging in the tender pash.

    Right Ho, Jeeves

    P. G. Wodehouse

  • When "Dr. Blitz" and his "sons" went ashore it was the foggiest kind of a Christmas morning.

British Dictionary definitions for foggiest


adjective -gier or -giest

thick with fog
obscure or confused
another word for fogged
not the foggiest, not the foggiest idea or not the foggiest notion no idea whatsoeverI haven't the foggiest
Derived Formsfoggily, adverbfogginess, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for foggiest



1540s, perhaps from a Scandinavian source, or formed from fog (n.1) + -y (2). Foggy Bottom "U.S. Department of State," from the name of a marshy region of Washington, D.C., where many federal buildings are (also with a suggestion of political murkiness) popularized 1947 by James Reston in "New York Times," but he said it had been used earlier by Edward Folliard of "The Washington Post."

Online Etymology Dictionary, © 2010 Douglas Harper