Inimical/ɪˈnɪmɪkl/ Definition 1 of 2Pro Tip 1/3Negative Outcome Use 'inimical' to suggest something leads to bad results. Pollution is inimical to the environment Pro Tip 2/3Unfriendly Tone Expresses a tone that is not supportive or encouraging. His inimical response discouraged further discussion. Pro Tip 3/3Strong Opposition Shows strong disagreement or conflict with someone or something. The new regulations were inimical to her business interests.