1. A subject or matter that is not applicable, pertinent, or related to the current discussion, context, or purpose
His comment about the weather was an irrelevant topic during the business meeting.
Seu comentário sobre o clima foi um tópico irrelevante durante a reunião de negócios.
2. Information or a subject that lacks importance or significance to the matter at hand
The historical facts she mentioned were irrelevant topics to solving the current problem.
Os fatos históricos que ela mencionou foram tópicos irrelevantes para resolver o problema atual.