make rough or rougher;
"roughen the surfaces so they will stick to each other"
- Roughen the surface before applying the paint.
Its rude hair Roughens the wind that lifts it.出自： Shelley
The nap of the cloth is roughened up by a brush.出自： G. Dodd
That girl's..nature seemed to roughen itself against seeing us so bound up in Pet.出自： refl.