The antonyms for the word "co-equals" are "subordinate" and "superior". Subordinate refers to someone who is of lower rank or position compared to another person. In a workplace, an employee is subordinate to their manager. On the other hand, superior refers to someone who is of higher rank or position. A CEO is superior to their employees. Another antonym for "co-equal" is "unequal," which connotes a lack of balance or fairness in a relationship. When there is inequality in a work environment, it can lead to a lack of trust, low morale, and conflict.