1. Information, topic, or issue that is not applicable, pertinent, or important to the matter at hand; something that does not relate to the subject being discussed or decided
The judge ruled that the defendant's personal life was irrelevant matter and should not be presented in court.
O juiz decidiu que a vida pessoal do réu era assunto irrelevante e não deveria ser apresentado em tribunal.
2. In legal contexts, evidence or arguments that do not bear on the case or issue under consideration
Bringing up past disputes was irrelevant matter to the contract negotiation.
Trazer à tona disputas passadas era assunto irrelevante para a negociação do contrato.