Despite the gray in his hair, his youthhood showed in the way he laughed and chased sunsets.

The surgeon aimed to youthen her appearance with a minimally invasive procedure, leaving her glowing.

By modifying the cellular environment, the biotech firm is youthening elderly tissues to restore lost function.

The effects team youthened the actor for the flashback scenes.

The artist youthens the city with vibrant murals.

We spent all afternoon volunteering at the community youthfest, setting up booths and organizing games.

Her youthless expression betrayed a life of hard work.

Her youthlike enthusiasm lifted everyone's spirits during the long conference.

His youthly enthusiasm for painting surprised everyone at the gallery.

Youthism in hiring practices often prevents talented young applicants from advancing.