1. A romantic or personal relationship that has been in existence for a considerable period of time and has developed a stable, committed foundation
They have an established relationship and are planning to get married next year.
Eles têm um relacionamento estabelecido e estão planejando casar no próximo ano.
2. A professional or business relationship that has been formally agreed upon and is functioning on a regular basis
Our company maintains an established relationship with several key suppliers.
Nossa empresa mantém um relacionamento estabelecido com vários fornecedores principais.