coars·en 
/ˈkoɚsn̩/ verb
coars·ens; coars·ened; coars·en·ing /ˈkoɚsn̩/ verb 1 a [+ obj] : to make (something) rough or rougher
▪ Coarsen [=roughen] the surface with a file before you apply the glue. ▪ Her hands were coarsened by years of hard work.
b [no obj] : to become rough or rougher
▪ His hands coarsened [=roughened] from years of hard work. 2 a [+ obj] : to cause (someone or something) to become rude or offensive
▪ He was coarsened by his time in prison. ▪ offensive words that coarsen the English language
b [no obj] : to become rude or offensive
▪ The book describes how popular culture has coarsened in recent decades.
▪ Coarsen [=roughen] the surface with a file before you apply the glue. ▪ Her hands were coarsened by years of hard work.
b [no obj] : to become rough or rougher
▪ His hands coarsened [=roughened] from years of hard work.
▪ He was coarsened by his time in prison. ▪ offensive words that coarsen the English language
b [no obj] : to become rude or offensive
▪ The book describes how popular culture has coarsened in recent decades.
