When two people or groups are "at daggers with" each other, it means they are in a state of bitter conflict, animosity, or hostility. However, there are plenty of antonyms to this phrase that suggest positive relationships, peace or even neutrality. Some words that can be used as antonyms for "is at daggers with" are harmonious, reconciled, congenial, peaceful, cordial, amicable, concordant, compatible, agreeable or cooperative. These words all suggest friendly, comforting, and supportive interactions between people. By using such antonyms, one can express a more positive tone of relationships that is not characterized by hate, anger, or violence but is peaceful, respectful, and compassionate.