roughens is roughen's Simple Present

roughen

US [ˈrʌf(ə)n]
UK ['rʌf(ə)n]
  • v.弄粗糙;变得崎岖不平
  • Web变粗糙;变得粗糙;使粗糙
Simple Present:roughens  Present Participle:roughening  Past Tense:roughened  
v.
1.
弄粗糙,使崎岖不平
2.
变粗糙,变得崎岖不平