1. An informal, relaxed farewell or goodbye said in a casual, non-formal manner without much ceremony
After the meeting, they exchanged a casual goodbye and went their separate ways.
Após a reunião, trocaram uma despedida casual e seguiram seus caminhos.
2. A quick or brief farewell between friends or acquaintances in everyday situations
With just a wave and a casual goodbye, he left the coffee shop.
Com apenas um aceno e uma despedida casual, ele saiu da cafeteria.