1. to perform work or employment in an inconsistent or uneven manner, without a regular schedule or pattern
She works irregularly as a freelance consultant, taking projects as they come.
Ela trabalha irregularmente como consultora autônoma, pegando projetos conforme surgem.
2. to be employed on a part-time or ad hoc basis without fixed hours
He works irregularly at the restaurant, only a few shifts per week.
Ele trabalha irregularmente no restaurante, apenas alguns turnos por semana.