1. In a disorderly, untidy, or dirty manner
He messily ate the spaghetti, getting sauce all over his shirt.
Ele comeu o espaguete de forma bagunçada, sujando a camisa de molho.
2. In a complicated, confused, or poorly organized way
The project ended messily with many loose ends.
O projeto terminou de forma bagunçada com muitas pontas soltas.