fog

noun
\ ˈfȯg How to pronounce fog (audio) , 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 How to pronounce fogless (audio) , 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

One cool customization is to mount as-bright-as-possible fog lights out front, rigged with a set-aside interior switch. Tom Stienstra, SFChronicle.com, "Tips for customizing your favorite outdoor gear," 5 June 2019 One party this year was in a gymnasium of a Midland church, where organizers had a fog machine and inflatable tunnel for the kids announcing their commitments. Kevin Armstrong, WSJ, "Youth Football League Encourages ‘Clear Eyes, Full Hearts, Complete Signatures’," 17 Dec. 2018 Feeling comfortable Previous SlideNext Slide On the outside, the MDX Sport Hybrid looks a lot like its conventional-engine counterpart, including its diamond-pentagon grille along with LED headlamps and fog lights. Eric Bangeman, Ars Technica, "Love the hardware, hate the UI: The Acura MDX Sport Hybrid," 13 Dec. 2018 For a more accurate assessment, rent a fog machine from a party-supply store. Henry Gifford, Popular Mechanics, "Your House Is Bleeding You Dry. Here Are 9 Steps To Save You Money.," 8 Aug. 2018 These include rotating license plates, machine guns behind the fog lights and in the front fenders, a bulletproof shield that pops up behind the rear window and, of course, a working ejector seat. Gary Gastelu, Fox News, "License to build? Lego introduces 'Goldfinger' James Bond 007 Aston Martin DB5," 18 July 2018 The simulator can put the car on any of 11 race tracks—built from lidar maps—in good weather, rain, or fog. Alex Davies, WIRED, "How It Feels to Drive—and Crash—the First-Ever Mid-Engine Corvette," 18 July 2019 The company’s ordering system can suspend delivery in certain areas during severe weather or fog. Deborah Storey | For Al.com, al.com, "Food delivery craze drives GrubSouth," 17 July 2019 Each emotional crescendo, as the season draws to a close, might have offered new observations about the trauma that hovers over these characters, the way fog lingers over the crashing waves of the Pacific. Megan Garber, The Atlantic, "Big Little Lies Forgot the Thing That Made It Great," 16 July 2019

Recent Examples on the Web: Verb

Just talking about how to write a good one — which words to use and which to avoid — is so steamy, her glasses fog up. Lisa Bonos, Dallas News, "Romance novelist Helen Hoang writes about love on the autism spectrum," 23 July 2019 Just talking about how to write a good one — what words to use and which to avoid — is so steamy, her glasses fog up. Lisa Bonos, Washington Post, "A romance novelist struggled with Asperger’s. Now she writes about love on the spectrum.," 19 July 2019 Dixon's test consisted only of the framework, not the polycarbonate laminated screen that is meant to have an anti-reflective coating on the screen's interior, anti-fogging device and possible tear-offs. Robby General, Indianapolis Star, "Scott Dixon tests IndyCar's Aeroscreen prototype in simulator," 2 July 2019 His breath, hissing out into the moonlit air, would have fogged the lenses. David Canfield, EW.com, "First Look: The Andromeda Strain is back with a new look for its 50th anniversary," 26 June 2019 The detective won’t forget the video — a bag over the little girl’s face, her tiny gasps fogging the plastic. Tim Prudente, baltimoresun.com, "Speaking for baby Rose: How a Baltimore detective found his purpose investigating child abuse," 6 June 2019 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

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

7 Aug 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 How to pronounce fog (audio) , 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 How to pronounce fog (audio) \
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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