Collocation warm-up – bitter

a bitter battle/dispute
. There was a bitter battle over the building of the new airport

a bitter fight/struggle
The law was passed after a bitter fight that lasted nearly a decade

a bitter conflict
. The stage is set for a bitter conflict with trade unions

a bitter debate/argument
. The country now faces a bitter debate over the issue

bitter disagreement
. There were reports of bitter disagreement between the European Communities

bitter opposition
. The new tax aroused bitter opposition

a bitter rival/enemy = a rival/enemy who you have strong feelings of dislike or anger about
. The two men are bitter rivals for the party leadership