Abrasive

- a substance or material capable of polishing or cleaning a hard surface by rubbing or grinding. (adjective)
- showing little concern for the feeling of others. (adjective)
- a substance is used for cleaning, polishing, or grinding hard surfaces. (noun)

Example: - abrasive paper is used to clean the hard surfaces. (adjective)
- You'll need a strong abrasive for cleaning these utensils.

Synonyms: harsh, corrosive, grinding, tough, rough, stern, nasty, coarse, mordant, brusque, caustic

Antonyms: kind, gentle