This is the 657th most frequent French word.
jeunesse
"Jeunesse" means "youth" in English.
Here, 'jeunesse' is used as a general term to describe the period of life associated with being young.
La jeunesse est l'âge de tous les possibles.
Youth is the age of all possibilities.
In this sentence, 'jeunesse' refers to the specific period in the past when the person was young.
Dans sa jeunesse, elle aimait voyager à travers l'Europe.
In her youth, she loved traveling across Europe.
Here, 'jeunesse' metaphorically conveys a quality of being mentally or energetically youthful.