1. A casual, informal social gathering without elaborate planning, formal dress code, or grand scale
We're just having a low-key social event at my place with a few close friends.
Vamos fazer um evento social discreto na minha casa com alguns amigos próximos.
2. A relaxed social occasion that emphasizes comfort and informality over impressiveness
The company picnic was a low-key social event meant to help employees unwind.
O piquenique da empresa foi um evento social discreto para ajudar os funcionários a relaxar.