controversial
controversy + -al
https://gyazo.com/517309157c9b7669ea88389549c22781
source: [言い合う人たち｜無料GIF画像検索 GIFMAGAZINE 2177340]
adjective
giving rise or likely to give rise to public disagreement: 公然な意見の相違を引き起こす、引き起こしそうな
〈話題･考え･決定などが〉論争を呼ぶ, 議論の余地のある, 論争(上)の, 異論の多い(debatable)
e.g. years of wrangling over a controversial bypass.: 議論を呼ぶバイパスの数年に及ぶ口論
DERIVATIVES
controversialist | ˌkäntrəˈvərSHələst, ˌkäntrəˈvərsēələst | noun
ORIGIN
late 16th century: from late Latin controversialis, from controversia (see controversy).