Word.ws English Dictionary

fog

/fɔɡ/UK/fɒɡ/

fog noun: a thick cloud that forms near the ground; the obscurity of such a cloud.

fog: a thick cloud that forms near the ground; the obscurity of such a cloud
Image: Yann Richard ( Ze ), CC BY 2.5, via Wikimedia Commons

Noun (1)

fog (countable and uncountable, plural fogs)

  1. (uncountable) A thick cloud that forms near the ground; the obscurity of such a cloud.
    • a bank of fog
    • Thus the red damask curtains which now shut out the fog-laden, drizzling atmosphere of the Marylebone Road, had cost a mere song, and yet they might have been warranted to last another thirty years. A great bargain also had been the excellent Axminster carpet which covered the floor;[…].1913, Mrs. [Marie] Belloc Lowndes, chapter I, in The Lodger, London: Methuen, →OCLC; republished in Novels of Mystery: The Lodger; The Story of Ivy; What Really Happened, New York, N.Y.: Longmans...
    Synonyms:
    haze, mist
  2. (uncountable) A mist or film clouding a surface.
    Synonyms:
    steam
  3. (figuratively) A state of mind characterized by lethargy and confusion.
    • He did so many drugs, he was still in a fog three months after going through detox.
    • I was on my way to the door, but all at once, through the fog in my head, I began to sight one reef that I hadn't paid any attention to afore.1913, Joseph C[rosby] Lincoln, chapter IV, in Mr. Pratt’s Patients, New York, N.Y.; London: D[aniel] Appleton and Company, →OCLC
    Synonyms:
    daze, haze
  4. A silver deposit or other blur on a negative or developed photographic image.
  5. Distance fog.

Verb (1)

fog (third-person singular simple present fogs, present participle fogging, simple past and past participle fogged)

  1. (intransitive) To become covered with or as if with fog.
  2. (intransitive) To become obscured in condensation or water.
    • The mirror fogged every time he showered.
    Synonyms:
    become cloudy, become steamy
  3. (intransitive) To become dim or obscure.
  4. (transitive) To make dim or obscure.
  5. (transitive) To spoil (film) via exposure to light other than in the normal process of taking a photograph.
  6. (transitive) To cover with or as if with fog.
    • Fogging for adult mosquito control began on June 4th in residential areas. Until September 25th, the Metro area was fogged eleven times, using nine truck-mounted foggers, eight hand swing foggers, and two boats.1968, Eighth Annual Report, Metropolitan Corporation of Greater Winnipeg, page 7
  7. (transitive) To disperse insecticide into (a forest canopy) so as to collect organisms.
  8. (transitive) To obscure in condensation or water.
    • Unfortunately, the pendulum has swung way too far to the other end where the saying in the industry is is^([sic]) that if you could fog a mirror, you could get a loan.2008, United States Congress, House Committee on Financial Services. Subcommittee on Housing and Community Opportunity - Foreclosure, Foreclosure Prevention and Intervention: The Importance of Loss...
  9. (transitive) To make confusing or obscure.
    Synonyms:
    blur, cloud, obscure

Noun (2)

fog (uncountable)

  1. A new growth of grass appearing on a field that has been mowed or grazed.
    • The inclosures of fog, or aftergrass, reserved for spring-feed, are now supposed to be shut up, also the burnet, which is never to be fed in autumn ...1800, John Lawrenece, The New Farmer's Calendar; Or, Monthly Remembrancer, for All Kinds of Country Business: Comprehending All the Material Improvements in the New Husbandry ... By a Farmer and...
  2. (UK, dialectal) Tall and decaying grass left standing after the cutting or grazing season.
    • […] and they generally leave a great deal of Fog to rot on the Ground, which, with the Help of his well turned Dung-hill, dress his Ground […]1744, William Agric Ellis, The Modern Husbandman, page 104
    Synonyms:
    foggage
  3. (Scotland) Moss.

Verb (2)

fog (third-person singular simple present fogs, present participle fogging, simple past and past participle fogged)

  1. (transitive) To pasture cattle on the fog (of), or aftergrass, of; to eat off the fog from (a field).
  2. (intransitive) To become covered with the kind of grass called fog.

Verb (3)

fog (third-person singular simple present fogs, present participle fogging, simple past and past participle fogged)

  1. (intransitive, obsolete) To practice in a small or mean way; to pettifog.
    • Where wouldst thou fog to get a fee?a. 1701 (date written), John Dryden, “The Counter Scuffle”, in The Miscellaneous Works of John Dryden, […], volume (please specify |volume=I to IV), London: […] J[acob] and R[ichard] Tonson, […]...

Noun (3) capitalized: FOG

FOG (uncountable)

  1. (abbreviation, initialism) Initialism of fat, oil, and grease.
  2. (abbreviation, initialism) Initialism of frequency of gobbledygook: the commonness of long and complicated words in a text, as measured by systems like the Gunning fog index.

Adjective capitalized: FOG

FOG (not comparable)

  1. (abbreviation, initialism) Initialism of fraudulently-obtained genuine, a type of illicit passport.

fog meaning in Hindi, Tamil, Marathi and Urdu

fog in Hindi

cloud that forms at a low altitude and obscures vision
कुहरा kuhrā, धुंध dhundh, कोहरा kohrā

fog in Tamil

cloud that forms at a low altitude and obscures vision
மூடுபனி mūṭupaṉi, பனிமூட்டம் paṉimūṭṭam, மஞ்சு mañcu

fog in Marathi

धुके, धुकं

fog in Urdu

cloud that forms at a low altitude and obscures vision
کُوہْرا kūhrā, دھُنْد dhund, دُھنْدھ dhundh
More languagesFewer languages
fog in Bengali
কুয়াশা kuẏaśa
fog in Telugu
పొగమంచు pogamañcu
fog in Malayalam
മൂടൽമഞ്ഞ് mūṭalmaññŭ
fog in Kannada
ಮಬ್ಬು mabbu
fog in Punjabi
ਧੁੰਦ dhund
fog in Gujarati
ધુમ્મસ dhummas
fog in Odia
କୁହୁଡ଼ି kuhuṛi
fog in Sanskrit
नभस् nabhas
fog in Sinhala
මීදුම mīduma
fog in Assamese
কুঁৱলী kũwoli
fog in Nepali
कुहिरो kuhiro, हुस्सु hussu
fog in Pashto
خوپ xwap, خوپڼه xopǝ́ṇa, خوپڼی xopaṇay
fog in Tagalog
hamog
fog in Arabic
ضَبَاب ḍabāb, شبورة šabbūra, ضباب ḍabāb, ضبابة ḍbāba
fog in Malay
kabus, kabut, keliru
fog in Indonesian
kabut
fog in Persian
مِهْ meh, میغ miġ, تَمَن taman
fog in Thai
หมอก mɔ̀ɔk
fog in Vietnamese
sương mù
fog in Myanmar
မြူ mru
Dhivehi
ދުނފިނި dunfini
Kashmiri
وُنَل vunal

Examples of fog in a sentence

  • We will use a smoke machine to simulate the fog you will actually encounter.
  • The fog has vanished and it's shaping up to be a beautiful day.
  • My glasses fogged up when I walked into the steamy room.

All 40 example sentences with fog

Synonyms of fog

3 more synonymsFewer synonyms

All synonyms of fog

Forms of fog

Noun
pluralfogs
Verb
third-person singular presentfogs
present participlefogging
past participlefogged
pastfogged

Plural of fog: fogs

Origin of fog

Origin uncertain; but probably of North Germanic origin. Probably either a back-formation from foggy (“covered with tall grass; thick, marshy”), from the earlier-attested fog (“tall grass”) (see below), or from or related to Danish fog (“spray, shower, drift, storm”), related to Icelandic fok (“spray, any light thing tossed by the wind, snowdrift”), Icelandic fjúka (“to blow, drive”), from Proto-Germanic *feukaną (“to whisk, blow”), from Proto-Indo-European *pug- (“billow, bulge, drift”), from *pew-, *pow- (“to blow, drift, billow”), in which case related to German fauchen (“to hiss, spit, spray”).

From Middle English fogge (“tall grass”), probably from Norwegian fogg (“tall, worthless grass”); compare Scots fog (“moss; lichen”).

Compare Old Dutch focker.

Words formed from fog

Phrases with fog

23 more phrasesFewer phrases

Words that rhyme with fog

39 more rhymesFewer rhymes

Questions about fog

What does fog mean?
Fog means a thick cloud that forms near the ground; the obscurity of such a cloud.
What is fog in Hindi?
Fog in Hindi is कुहरा (kuhrā), धुंध (dhundh), कोहरा (kohrā). See Fog meaning in Hindi.
What part of speech is fog?
Fog can be a noun, a verb or an adjective.
How do you pronounce fog?
Fog is pronounced /fɒɡ/ (UK).
What is the plural of fog?
The plural of fog is fogs.

Words near fog in the dictionary

  1. foetuses in foetu
  2. Fofana
  3. Fofanas
  4. fofarraw
  5. fofarraws
  6. fog
  7. fog a mirror
  8. fog bank
  9. fog banks
  10. fog bell
  11. fog bells

Source and license

Adapted from Wiktionary: fog (page history and authors); FOG (page history and authors); fog (Marathi, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-fog.ogg.

Cite this entry: “fog.” Word.ws, https://word.ws/fog. Based on Wiktionary, CC BY-SA 4.0.