Inimical means undfriendly and is an adjective and comes from a latin root. SENTENCE: The inimical police officer writes the guy a ticket. : The inimical boy at school acts like a bully.

Unfriendly to

kiss and love

An inimical witness refers to a witness who is hostile or unfriendly towards a party in a legal case, typically providing testimony that is detrimental to that party's interests. The concept comes from common law and is often encountered in courts when a witness's impartiality or credibility is in question due to their relationship with one of the parties involved. Inimical witnesses can significantly impact the outcome of a case by influencing the judge or jury through their biased testimony.

The opposite would be unfriendly. Other possible adjectives are hostile, antagonistic, inhospitable, or inimical.