1. Conditional or subjunctive form of 'desnivelar' - to make uneven, to create an imbalance in level or height
If they removed the support, it would make the structure uneven.
Se removessem o suporte, desnivelaria a estrutura.
2. To create a difference in elevation or level between two surfaces or objects
The erosion would create an uneven terrain.
A erosão desnivelaria o terreno.