Added 10 October 2026 groundbreaker noun Categories: PeopleObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about groundbreaker at Wordnik → Where our words come from → Someone who helps to open up a new line of research or technology or art. Origin From ground + breaker. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: trailblazerpathbreakeroriginatorapostletrailbreakerpioneeressstarternovatorfounderfoundererbeginnerprocreator Back to today's word