The adjective disputatious means someone who likes to argue and disagree a lot.
Synonyms are argumentative, controversial, dissentious, or quarrelsome.
The word origins in 1650s. It comes from disputation meaning “debate, argue” plus -ous.
Employees were relieved after their disputatious leader resigned.
The author uses a disputatious style in her articles.
As much as possible, they avoid the disputatious argument in their show.