inimical /ɪˈnɪ.mɪ.kəl/ adjective2 •Unfriendly, hostile.Her inimical attitude precludes romance. •Harmful in effect.Slaves knew that some of the treatments worsened problems and, perhaps most important, they realized that a master's interest in their fitness for work was sometimes inimical to their health. — 2008 formsmore inimical · most inimical