fog

noun
\ ˈfȯg , fäg\

Definition of fog

 (Entry 1 of 2)

1a : vapor condensed to fine particles of water suspended in the lower atmosphere that differs from cloud only in being near the ground
b : a fine spray or a foam for firefighting
2 : a murky condition of the atmosphere or a substance causing it
3a : a state of confusion or bewilderment spent the morning in a fog
b : something that confuses or obscures hid behind a fog of rhetoric
4 : cloudiness or partial opacity in a developed photographic image caused by chemical action or stray radiation

fog

verb
fogged; fogging

Definition of fog (Entry 2 of 2)

transitive verb

1 : to cover, envelop, or suffuse with or as if with fog fog the barns with pesticide
2 : to make obscure or confusing accusations which fogged the real issues
3 : to make confused
4 : to produce fog on (something, such as a photographic film) during development

intransitive verb

1 : to become covered or thick with fog
2a : to become blurred by a covering of fog or mist
b : to become indistinct through exposure to light or radiation

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Other Words from fog

Noun

fogless \ ˈfȯg-​ləs , ˈfäg-​ \ adjective

Synonyms & Antonyms for fog

Synonyms: Noun

daze, dazedness, haze, muddle, spin, swoon

Synonyms: Verb

becloud, befog, blur, cloud, confuse, muddy, obfuscate

Antonyms: Verb

clarify, clear (up), illuminate

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Examples of fog in a Sentence

Noun

Heavy fog made it difficult to see the road. a climate marked by heavy fogs The fog reduced visibility to a quarter of a mile. This problem has me in a fog.

Verb

The steam from the pot was fogging the window near the stove. The bathroom was all fogged up after my shower. politicians who try to fog the issue instead of taking a stand
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Recent Examples on the Web: Noun

In 1956, the ocean liner Stockholm collided with the Italian ship Andrea Doria in dense fog near Nantucket Island. James R. Hagerty, WSJ, "Bernard Milch, Holocaust Survivor, Founded Firm to Equip Coin Laundries," 18 Jan. 2019 This is an area hazier than gray and more nebulous than fog. Tamar Adler, Vogue, "Is Healthy Snack Food Actually Healthy—or Just Addictive?," 18 Jan. 2019 Strangely, this sale price only applies to the charcoal color, not the fog or coral options. Cameron Faulkner, The Verge, "Google Daydream View virtual reality headset is $70 off," 1 Aug. 2018 Even in that mental and emotional fog, there are several next steps to consider. Korin Miller, SELF, "Do You Always Get BRCA Testing When Diagnosed With Breast or Ovarian Cancer?," 30 Nov. 2018 On Sunday, conditions were just about perfect, but one section of track was a little damp from early morning fog. Jack Stewart, WIRED, "The Neat Engineering VW Used to Smash the Pikes Peak Record," 25 June 2018 But from that fog came a request when her son, John, paid one of his regular visits to her at her long-term care center. Tom Hallman Jr., OregonLive.com, "A special request fulfilled for her 100th birthday: Tom Hallman," 3 June 2018 The Angels have lost six of seven and eight of 11 and continue to show faint signs of emerging from an offensive fog that now has been witnessed by two countries. Jeff Miller, latimes.com, "Angels can't recover from Toronto's early five-run burst," 23 May 2018 As Justify emerged from the heavy fog and appeared to pull away, Bravazo and Tenfold sneaked up to finish second and third, a neck apart. New York Times, "In Belmont Stakes, Justify Might Face Familiar Competition," 20 May 2018

Recent Examples on the Web: Verb

The Reflection, Celebrity’s largest ship, even offers a suite with a glass shower cantilevered out over the sea (don't worry about peeping Toms; the glass digitally fogs for privacy). Condé Nast Traveler, "The Best Cruise Lines in the World: 2018 Readers' Choice Awards," 9 Oct. 2018 In the run-up to the crisis, a housing surplus prompted mortgage lenders to issue loans to anyone who could fog a mirror just to fill the excess inventory. Jeff Andrews, Curbed, "10 years after the financial crisis, is the housing market still at risk?," 29 Aug. 2018 In its place, the raptors come to the kitchen door and snort, fogging up the window as only a warm-blooded animal can do. NBC News, "'Jurassic World': Paleontologist who inspired Alan Grant role talks real-life dino science," 20 June 2018 But his profile is solemn: a sharp jawline, chin raised and jutted, tinted sunglasses that appear more fogged-over than tinted, hair sheared short, perhaps by an electric razor. New York Times, "The Artists Who Brought Asian-Americans Into the Annals of Contemporary Art," 12 Apr. 2018 The Wildcat webcam late Monday afternoon was fogged in, with just a few trees showing in the foreground. Katie Camero, BostonGlobe.com, "Here’s a cool thought: There’s still snow on Mount Washington," 2 July 2018 Instead, Jurassic Park featured the raptors fogging a kitchen window with their breath before opening the kitchen door — something only warm-blooded animals could do. Alessandra Potenza, The Verge, "Were real dinosaurs as bulletproof as the one in Jurassic World: Fallen Kingdom?," 19 June 2018 Read More Worker saw a 'fogged up' car in a parking lot. Kaitlyn Schwers, kansascity, "They left 13 dogs in a hot car for hours, Missouri cops say. Now they face charges," 31 May 2018 The family hiked up and skied above the lift line, the sandwiches in their pockets fogging the cellophane. Naomi Fry, The New Yorker, "Rachel Kushner’s Immersive Fiction," 23 Apr. 2018

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

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First Known Use of fog

Noun

1544, in the meaning defined at sense 1a

Verb

circa 1592, in the meaning defined at transitive sense 1

History and Etymology for fog

Noun

probably back-formation from foggy

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Learn More about fog

Dictionary Entries near fog

foetid

foeto-

fofarraw

fog

fogas

fogbank

fog belt

Statistics for fog

Last Updated

20 Feb 2019

Look-up Popularity

Time Traveler for fog

The first known use of fog was in 1544

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More Definitions for fog

fog

noun

English Language Learners Definition of fog

 (Entry 1 of 2)

: many small drops of water floating in the air above the ground, the sea, etc.
: a state of mental confusion

fog

verb

English Language Learners Definition of fog (Entry 2 of 2)

: to cover or fill (something) with small drops of water : to make (something) foggy
: to become foggy
: to make (someone or something) confused

fog

noun
\ ˈfȯg , ˈfäg\

Kids Definition of fog

 (Entry 1 of 2)

1 : tiny drops of water floating in the air at or near the ground
2 : a confused state of mind I woke up in a fog.

fog

verb
fogged; fogging

Kids Definition of fog (Entry 2 of 2)

: to cover or become covered with tiny drops of water Steam from the shower fogged the mirror.
\ ˈfäg, ˈfȯg \
fogged; fogging

Medical Definition of fog

: to blur (a visual field) with lenses that prevent a sharp focus in order to relax accommodation before testing vision

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More from Merriam-Webster on fog

Rhyming Dictionary: Words that rhyme with fog

Thesaurus: All synonyms and antonyms for fog

Spanish Central: Translation of fog

Nglish: Translation of fog for Spanish Speakers

Britannica English: Translation of fog for Arabic Speakers

Britannica.com: Encyclopedia article about fog

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