coarsen
verb (used with or without object)
to make or become coarse.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“There are people who argue, ‘Oh, my God, these debates are coarsening the discourse,’ and ‘Oh, my God, these debates are distorting the process,’ ” Lehrer told me.
From The New Yorker ● Sep. 12, 2016