1. A system of beliefs, principles, or teachings that deviates from established, traditional, or widely accepted norms and practices
His unconventional doctrine challenged the foundations of classical philosophy.
Sua doutrina não-convencional desafiou os fundamentos da filosofia clássica.
2. An ideological or religious teaching that is unorthodox or heterodox in nature
The movement was criticized for promoting an unconventional doctrine that contradicted mainstream theology.
O movimento foi criticado por promover uma doutrina não-convencional que contradinha a teologia convencional.