Converse of object

• penetrate: Rudolf guides Santa's sleigh with the biological aberration of a red, glowing nose capable of penetrating thick fog?

Adjective modifier

• dense: Tuesday, January 26 The dense fog is over all things.

• thick: Thick fog lay way down in the valley below.

• swirling: A square cavern reached up until the ceiling was lost in swirling fog.

• impenetrable: Instantly the girl was engulfed in a swirling, thick impenetrable fog which pixie led her into the field of gorse.

• shallow: Shallow fog in low-lying places early in the day soon began to clear with the sun rise.

• coastal: Southern CA beaches may have " June Gloom " which means coastal fog most mornings, I cannot speak for the beaches further north.

Modifies a noun

• lamp: A rear fog lamp must have an idiot light on the dashboard.

• horn: There's fog horns, there's a piece of the Mozart Requiem, you name it.

• droplet: Compression also causes finest fog droplets to form in the air.

• patch: Low cloud and fog patches may also affect eastern Scotland.

• clearing: Becoming dry between 1500 and 1600 UTC, the fog clearing to fog patches at 1800 UTC and adjacent fog at 1900 UTC.

• signal: Fog signals have a limited application in hazard warning.

Noun used with modifier

• freezing: There was a lot of dense freezing fog around.

• brain: This alone will do wonders to sort out your brain fog by midday.

• sea: We rose to a curious sea fog surrounding the island.

• morning: Early morning fog on the morning of the extra day on the 29th was soon replaced by brighter weather.

• hill: Less hill fog around at first but returning in the rain later in the day.

Preposition: from

• UTC: Stratus lowering and increasing after 2100 UTC with fog from 2135 UTC.

Preposition: by

• UTC: Cloud gradually lowering to give fog by 2130 UTC.