1. third person singular preterite of 'desfazer' - to undo, to unmake, or to dissolve something that was done or made
He undid all the work that had been completed.
Ele desfez todo o trabalho que havia sido concluído.
2. to break up or dissolve a relationship, partnership, or agreement
They dissolved their business partnership last year.
Eles desfizeram sua parceria comercial no ano passado.