controvert/ˌkɔntrəˈvɜ:t; `kɑntrəˌvət/ v[Tn](fml 文) deny the truth of (sth); argue about 否定（某事物）; 争论; 反驳 a fact that cannot be controverted 无可置辩的事实.
牛津英汉双解词典