The word "interallied" refers to cooperation or communication between allied countries. Antonyms for this term could include words like "discord," "strife," or "enmity," which describe conflict, dissent, and hostility between nations or groups. Other antonyms could include words like "isolated," "independent," or "self-sufficient," which suggest a lack of cooperation or any shared interests or goals. Additionally, terms like "non-aligned," "neutral," or "unallied" might be considered antonyms in the sense that they describe countries or groups that are not aligned with any particular alliance or coalition. Overall, antonyms for "interallied" highlight the antithesis of collaboration and unity between nations.