Added 10 October 2026 rulebreaker noun noun ! Definition from Wiktionary (CC BY-SA). More about rulebreaker at Wordnik → Where our words come from → One who breaks a rule. Origin From rule + breaker. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: lawbreakerviolatorbreacherlaw-breakerinfractoroutbreakertrucebreakercontravenercheateroffendercriminalizeroathbreaker Back to today's word