Gets rough

Usage examples of coarsens.

And there was a lot of getting in and out of boats, in and out of pools, and, in a daze of booze and indifference, getting in and out of beds, even though I had long since discovered that it is a habit which degrades the receptivity to sensation, coarsens selectivity, implies obligation, and turns off most useful introspection.

They are covered with sparse silky fur, which coarsens into thick hair on their heads, shoulders, armpits, and groins (and on the males' backs).

Wealth tends to numb feeling and nibble at talent, but poverty coarsens feeling and chokes talent, and feeling and talent are the important things in your job and mine.

It was Distant Smoke who answered, "The fur coarsens as we grow older.