marked by or capable of arousing controversy; "the issue of the death penalty is highly controversial"; "Rushdie's controversial book"; "a controversial decision on affirmative action"
If you describe something or someone as controversial, you mean that they are the subject of intense public argument, disagreement, or disapproval. Immigration is a controversial issue in many countries The changes are bound to be controversial. + controversially con·tro·ver·sial·ly More controversially, he claims that these higher profits cover the cost of finding fresh talent. causing a lot of disagreement, because many people have strong opinions about the subject being discussed