There are 2 definitions of fog in English:

fog1

Line breaks: fog
Pronunciation: /fɒg
 
/

noun

1 [mass noun] A thick cloud of tiny water droplets suspended in the atmosphere at or near the earth’s surface which obscures or restricts visibility (to a greater extent than mist; strictly, reducing visibility to below 1 km): the collision occurred in thick fog
More example sentences
  • Thick fog had reduced visibility, causing the Glanmire to plough into Black Carr Rock.
  • Police said it was raining at the time of the crash and that low cloud and dense fog reduced visibility.
  • Rain, heavy cloud cover and thick fog in the area had prompted Albania's prime minister, Fatos Nano, to cancel his own flight to the conference.
Synonyms
mist, mistiness, fogginess, haar, smog, murk, murkiness, haze, haziness, gloom, gloominess; Northern English(sea) fret
informal pea-souper
literary brume, fume
1.1 [in singular] An opaque mass of particles in the air: a whirling fog of dust
More example sentences
  • In the auditorium eons of dust collected in the pale green stage curtain, sending up a billowing fog of allergens each time the folds were drawn or opened.
  • A billowing fog of chill air poured out of the door and swirled around Cane's arms and legs as he heedlessly strode forward.
  • Soon, up the street, I saw the swirling masses, vaguely in the fog of the gasses.
1.2 Photography Cloudiness which obscures the image on a developed negative or print.
More example sentences
  • Although it is possible to print through the fog, graininess is increased by developer induced base fog.
  • Restrainers both slow the rate of development and prevent unwanted fog.
  • The image is fairly decent, the full screen transfer suffering from a little-too-soon cosmetic soft focus and fog.
2 [in singular] A state or cause of perplexity or confusion: the coffee helped clear the fog in my brain
More example sentences
  • He sighed, leaning back into the chair and raising his hands to his eyes, as if trying to clear the fog from his brain.
  • Suddenly the fog cleared from his brain and he heard what the voice was saying.
  • Victor sat down, shaking his head in an attempt to clear the fog overwhelming his brain.
Synonyms
daze, stupor, trance, haze, muddle; state of bewilderment, state of confusion, state of disorientation

verb (fogs, fogging, fogged)

[with object] Back to top  
1(With reference to a glass surface) cover or become covered with steam: [with object]: hot steam drifted about her, fogging up the window [no object]: the windscreen was starting to fog up
More example sentences
  • Solastian was half-asleep now and leaning against the door window, eyes half-closed and unfocused and breath fogging up the glass.
  • In a flash, Bryn's snout was inches from Zion's nose; his hot, steamy breath fogging up the glasses perched there.
  • After feeling weirded out for a few minutes, she noticed the steam fogging up the mirror.
Synonyms
steam up, mist over, cloud over, film over, become misty, become blurred, become covered in condensation; make hazy, make cloudy, obscure, shade, veil
literary befog, becloud
1.1 Photography Make (a film, negative, or print) obscure or cloudy.
More example sentences
  • This will eliminate reflections from the backing material that can fog the film.
  • When the buildup is sufficient, a spark may flash inside your camera, fogging the film.
  • First, the black - and-white latent image is developed and then the rest of the unexposed material is chemically fogged.
2Bewilder or puzzle: she stared at him, confusion fogging her brain
More example sentences
  • Confusion was fogging my brain up to the point that I couldn't think, I could only feel.
  • I sat up and buried my face in my hands, confusion fogging my mind.
  • My brain was so fogged, my memory so poor and my concentration so fleeting that it would take me the entire morning to eke out a paragraph.
Synonyms
muddle, daze, stupefy, fuddle, befuddle, bewilder, confuse, perplex, baffle, obscure
literary bedim, becloud
rare obfuscate
2.1Make (an idea or situation) difficult to understand: the government has been fogging the issue
More example sentences
  • But Reagan never let his crystalline beliefs be fogged by reality, including the reality of his own behavior.
  • Forget the figures for a moment, though: they fog the emotional experience that defines a legend.
3Spray with an insecticide.
More example sentences
  • Never spray or fog a house with insecticides to combat lice.
  • The city had decided to temporarily halt the mosquito fogging program.
  • Dueck says the grounds will be fogged for mosquitoes.

Origin

mid 16th century: perhaps a back-formation from foggy.

Phrases

the fog of war

Confusion caused by the chaos of war or battle: he argues that the fog of war clouded everyone’s judgement
More example sentences
  • Once again the strategic goal of a two-state solution is obscured by the fog of war.
  • The second section of the film takes place in the fog of war.
  • In real-time, counter-terrorism has its own equivalent of the fog of war.

Definition of fog in:

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Word of the day apposite
Pronunciation: ˈapəzɪt
adjective
apt in the circumstances or relation to something

There are 2 definitions of fog in English:

fog2

Line breaks: fog
Pronunciation: /fɒg
 
/

noun

[mass noun]
1The grass which grows in a field after a crop of hay has been taken.
More example sentences
  • If the humidity is too high, the fog just grows and grows out of control.
1.1Long grass left standing in a pasture and used as winter grazing.

Origin

late Middle English: origin uncertain; perhaps related to Norwegian fogg.

Definition of fog in: