na-adjective
hostile; adversarial; antagonistic
Describes an attitude, relationship, or action that is openly opposed or unfriendly. Often used in formal or analytical contexts such as business, law, or politics.
両社は敵対的な関係にある。
The two companies have a hostile relationship.
彼の敵対的な態度が会
His antagonistic attitude spoiled the atmosphere of the meeting.
敵意 is a noun meaning 'hostility' or 'ill will', focusing on the feeling. 敵対的 describes the outward expression or relationship.
Compound of 敵対 (hostility) + 的 (-like, -ive). The suffix 的 forms adjectival nouns from nouns, creating the meaning 'hostile, adversarial'.