• (British) IPA: /fɒɡ/
• (America) often IPA: /fɑɡ/

fog

1. (uncountable) A thick cloud that forms near the ground; the obscurity of such a cloud.
   • 1913, Mrs. [Marie] Belloc Lowndes, chapter I, in The Lodger, London: Methuen, OCLC 7780546 ↗; republished in Novels of Mystery: The Lodger; The Story of Ivy; What Really Happened, New York, N.Y.: Longmans, Green and Co., […], [1933], OCLC 2666860 ↗, page 0016 ↗:

     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; […].

   Synonyms: haze, mist
2. (uncountable) A mist or film clouding a surface.

   Synonyms: steam

3. 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.

   Synonyms: daze, haze

4. (photography) A silver deposit or other blur on a negative or developed photographic image.
5. (computer graphics) Distance fog.

• French: brouillard, brume
• German: Nebel
• Italian: nebbia
• Portuguese: nevoeiro, névoa; neblina
• Russian: тума́н
• Spanish: niebla

• Russian: (colloquial) пот

• Russian: be in a fog — быть как в туман

• French: voile

fog (fogs, present participle fogging; 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, photography) To become dim or obscure.
4. (transitive, photography) To make dim or obscure.
5. (transitive) To cover with or as if with fog.
   • 1968, Eighth Annual Report, Metropolitan Corporation of Greater Winnipeg, p 7:

     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.

6. (transitive) To disperse insecticide into (a forest canopy) so as to collect organisms.
7. (transitive) To obscure in condensation or water.
8. (transitive) To make confusing or obscure.

   Synonyms: blur, cloud, obscure

9. To practice in a small or mean way; to pettifog.

   • Where wouldst thou fog to get a fee?

• Italian: annebbiarsi
• Russian: затума́ниваться

• German: sich beschlagen, anlaufen
• Italian: appannarsi
• Russian: запотева́ть

• Italian: annebbiare
• Russian: затума́нивать

• Italian: appannare

fog (uncountable)

1. A new growth of grass appearing on a field that has been mowed or grazed.
2. (UK, dialect) Tall and decaying grass left standing after the cutting or grazing season; foggage.
3. (Scotland) Moss.

• Italian: guaime

• Italian: guaime

fog (fogs, present participle fogging; past and past participle fogged)

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

fog (uncountable)

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