1. Skillful methods or approaches that are delicate, refined, and not immediately obvious or direct
The painter used subtle techniques to create depth in the artwork.
O pintor usou técnicas sutis para criar profundidade na obra de arte.
2. Sophisticated or clever ways of achieving something with minimal visibility or apparent effort
The negotiator employed subtle techniques to persuade both parties.
O negociador empregou técnicas sutis para persuadir ambas as partes.