antagonistic
adjective
UK/ænˌtæɡ.ᵊnˈɪs.tɪk/
US/ænˌtæɡ.ᵊnˈɪs.tɪk/
Definitions of antagonistic adjective
displaying active opposition or hostility towards someone or something
During the meeting, he maintained an antagonistic stance towards every proposal.
The intensely competitive atmosphere has fostered an antagonistic relationship between the two companies.
Despite being brothers, they maintain an antagonistic rivalry with each other.