controversially

US /ˌkɑːn.trəˈvɝː.ʃəl.i/
UK /ˌkɑːn.trəˈvɝː.ʃəl.i/
"controversially" picture
1.

in a manner that is likely to cause public disagreement or argument

:
The new policy was controversially implemented without public consultation.
He controversially claimed that the Earth is flat.