The phrase "were on side" suggests being supportive, in agreement, or aligned with someone or something. Its antonyms could include "opposed," "against," "disagreed," "unfavorable," or "uncooperative." These words indicate a lack of unity, which could lead to conflicts, misunderstandings, and unsuccessful collaborations. In a workplace or team setting, it's essential to identify potential disagreements early on and find ways to address them constructively. By encouraging open communication, active listening, and mutual respect, everyone involved can work towards a common goal without sacrificing their individual perspectives. Ultimately, understanding and managing different perspectives and opinions can lead to more effective decision-making and a stronger sense of teamwork.