This is the 9528th most frequent French word.
décroître
To decrease.
Here, 'décroître' is used to describe the reduction in size or number of a population.
La population de cette ville commence à décroître à cause de l'émigration.
The population of this city begins to decrease due to emigration.
In this sentence, 'décroître' is used to indicate the decline in a statistical or measurable rate.
Le taux de croissance économique a commencé à décroître après la crise.
The economic growth rate started to decrease after the crisis.
Here, 'décroître' is applied to show the gradual reduction or fading of light intensity.