young gun

noun

1. an up-and-coming young man, esp one considered as being assertive and confident

Example Sentences

But do not cry for the former young gun.

From Seattle Times

In the early 1950s, a cohort of ambitious young gun capitalists in the United States saw opportunity in Europe’s war trash.

From Slate

The 36-year-old Serbian had been indestructible on Wimbledon's Centre Court for a decade but on Sunday he finally met his match as he ran out of ideas to stop young gun Alcaraz from hurtling towards the title.

From Reuters

Teixeira is described as "charismatic," apparently because of the ability he showed to gather young gun lovers and gamers and racists around him.

From Salon

We caught a glimpse of this possibility last year when President Biden signed the most sweeping gun violence bill in decades, strengthening background checks for young gun buyers, restricting gun ownership for domestic violence offenders and providing grants for agencies trying to enforce red-flag laws.

From Los Angeles Times