controverting is controvert's Present Participle

controvert

US [ˈkɒntrəˌvɜːt]
UK 
  • v.反驳;争论
  • Web辩论;辩驳;议论
Past Tense:controverted  Present Participle:controverting  Simple Present:controverts  
v.
1.
反驳
2.
争论,辩论