poster child

plural poster children · alternative posterchild

1. CanadaUSidiomaticOne who is a prototypical or quintessential example of something.

   He's a poster child for militant vegetarianism.

   3 more examples

   I think he smile could have opened the door by itself. It seemed to have a life of it’s^([sic]) own with snow-white teeth below sparkling blue eyes. Its owner could be the poster child for the expression “grinning from ear to ear.”

   2005, Susan Cunningham, “Poster Child”, in Unwrapping the Sandwich Generation. Life Vignettes about Seniors & Their Adult Boomer Children, Morgan James Publishing, →ISBN, page 175

   “He’s not exactly a poster child for the average well-adjusted American kid. He’s only been in-country for a few days.”

   2006, Ted Dekker, Bill Bright, Blessed Child, Thomas Nelson, →ISBN, page 77

   In the United States, thawing temperatures make Alaskan mountains the poster child of emerging landslide threats, says Higman.

   2026 February 27, Paul Salopek, “Hazard Cascade”, in National Geographic