The youthies gathered at the community center to plan the charity concert.

His youthly enthusiasm for painting surprised everyone at the gallery.

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

Her youthless expression betrayed a life of hard work.

Many writers nostalgically recall their youthhoods in small coastal towns, where the sea shaped their dreams.

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

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

The village elders remembered the bold youthhead who once led the harvest festival.

The artist youthens the city with vibrant murals.

The effects team youthened the actor for the flashback scenes.