at loggerheads (with someone) (over something)
US /æt ˈlɑːɡərˌhɛdz/
UK /æt ˈlɑːɡərˌhɛdz/
1.
in dispute or disagreement
:
•
The two departments have been at loggerheads over budget allocations for months.
•
The neighbors are constantly at loggerheads over the property line.