1 : not exactly but close in number, quality, meaning, etc.

• Roughly translated, it means “hurry up!”
• The new product is modeled roughly on an earlier design.
• Roughly 20 percent of our land is farmland.

2 a : in a way that is not gentle or careful

• He threw the package roughly in the truck.
• The guard told us roughly that we had to stand back.
• He pushed her roughly.

2 b : in a very simple or basic way

• a roughly built shelter
• roughly sketched drawings

2 c : in a way that produces a rough surface

• roughly cut timber