Roughen (verb)

1. To make the surface of something rough or irregular.
2. To make a sound or voice rough or harsh.
3. To make a situation or experience rough or difficult.

Origin:

The word 'roughen' comes from the middle english 'rounen' which means 'to make rough'. the word is related to the old english 'rúnan' which means 'to roar or make a noise'.

Examples:

1. She roughened the surface of the piece of wood with sandpaper.
2. His voice was roughened by years of smoking.
3. The wind and rain had roughened the sea, making it difficult for the boats to stay afloat.
4. He tried to roughen his voice to sound like a villain in the play.
5. The journey through the mountains was roughened by the harsh weather conditions.