coarsen

/ˈkɔːrsən/
verb
  1. To make or become rougher in texture or quality.
    • The sculptor used a rough tool to coarsen the surface of the clay.
    • Constant exposure to the wind and salt water will coarsen your skin.
    • The fabric began to coarsen after many washes.
  2. To make or become less refined, polite, or sensitive.
    • The constant negativity on social media can coarsen public discourse.
    • She worried that the violent movies would coarsen her children's sensibilities.
    • Years of working in a harsh environment seemed to coarsen his manners.
Antonyms
What does "coarsen" mean? | whatsthatwordmean | whatsthatwordmean