This is the 12283rd most frequent French word.
éclairci
"Éclairci" means "cleared up" or "brightened."
In this sentence, 'éclairci' is used as the past participle of 'éclaircir,' describing the action of the sky becoming clearer after the storm.
Le ciel s'est éclairci après la tempête.
The sky has cleared up after the storm.
Here, 'éclairci' refers to the gradual lightening of hair color over time, employing 'éclaircir' to describe a change in tone.
Ses cheveux se sont éclaircis avec le temps.
Her hair has lightened over time.
In this example, 'éclaircir' is used in its infinitive form and conceptually means to clarify or make something clearer, applied to the context of comprehension.