coarsens is coarsen's Simple Present

coarsen

US [ˈkɔrs(ə)n]
UK [ˈkɔː(r)s(ə)n]
  • v.(使)变粗糙
  • Web使某物变粗糙;使变粗俗
Simple Present:coarsens  Present Participle:coarsening  Past Tense:coarsened  
v.
1.
(使)变粗糙