Abrasive

verb to scrape or wear away by friction or erosion

• The rough surface of the sandpaper can abrade the metal surface.
• Be careful not to abrade the paint when scrubbing the car.
• I accidentally abraded my skin on the rough edge of the table.
• His constant criticism began to abrade her self-confidence over time.

adjective causing irritation, rough in texture, harsh in manner

• The abrasive material is used for smoothing and polishing surfaces.
• Her abrasive personality can be off-putting to some people.
• I can't stand his abrasive attitude.
• His words were abrasive, leaving a mark on her confidence.