This is the 9841st most frequent French word.
faiblir
"Faiblir" means "to weaken" or "to grow weaker."
Here, 'faiblir' is used to describe a reduction in someone's strength or resilience in a challenging situation.
Il commence à faiblir sous la pression.
He is beginning to weaken under the pressure.
In this case, 'faiblir' refers to the decreasing intensity or brightness of the sunlight.
La lumière du soleil semblait faiblir au coucher du soleil.
The sunlight seemed to dim at sunset.
Here, 'faiblir' is used to denote the act of losing firmness or conviction in one's beliefs.