noun

le brouillard

fog

C’est une brume épaisse qui rend la vue difficile, surtout le matin ou quand il fait froid.

French word: brouillard

Meaning in English:

The word "brouillard" means "fog" in English. It refers to a thick cloud of tiny water droplets suspended in the atmosphere near the earth's surface, which reduces visibility.

Parts of the word:

"Brouillard" is a noun.
It can be broken down informally into:
- "Brouil-" which is derived from old French or related to "brume" (mist).
- "-lard", a suffix seen in some French nouns (though here it is just part of the root, not a distinct morpheme).

Definitions:

Meteorological phenomenon: fog or mist that impairs visibility.
Figurative meaning: Sometimes used metaphorically to describe confusion, lack of clarity, or obscurity in a situation or in someone's thoughts.

Synonyms in French:

brume – mist, usually lighter and less dense than brouillard.
fumée – smoke (can sometimes cause a similar effect but different phenomenon).
nébulosité – cloudiness, though more used for clouds in the sky.

Antonyms in French:

clair / clarté – clear, clarity.
transparence – transparency.
soleil – sun, representing clear weather.

Example in sentences:

Literal: Le brouillard matinal a rendu la conduite difficile.
(The morning fog made driving difficult.)
Figurative: Il y a un brouillard dans ses explications; je ne comprends pas ce qu'il veut dire.
(There is a fog in his explanations; I don't understand what he means.)

If you want, I can provide more examples or etymology!