At daggers drawn
Definition 1 of 1
Pro Tip 1/3Conflict Intensity
Indicates a very intense and fierce conflict, often with a sense of mutual hostility. 
After the dispute over the inheritance, the siblings were at daggers drawn.
Pro Tip 2/3Not Physical
Used metaphorically for disagreements, not actual fighting with weapons. 
Despite being at daggers drawn, the debate between the candidates remained civil.
Pro Tip 3/3Serious Dispute
Refers to situations where reconciliation seems unlikely due to the serious nature of the disagreement. 
The joint venture failed, and the partners were at daggers drawn, refusing to communicate.