con·tro·ver·sial 
/ˌkɑ:ntrəˈvɚʃəl/ adjective
/ˌkɑ:ntrəˈvɚʃəl/ adjective [more controversial; most controversial] : relating to or causing much discussion, disagreement, or argument : likely to produce controversy
▪ Abortion is a highly controversial subject/issue/topic. ▪ a decision that remains controversial ▪ He is a controversial author/director/figure.
▪ Abortion is a highly controversial subject/issue/topic. ▪ a decision that remains controversial ▪ He is a controversial author/director/figure.
— con·tro·ver·sial·ly adverb
