1 [uncountable and countable]
a situation in which people express different opinions about something and sometimes argue [≠ agreement]:
We've had a few disagreements, but we're still good friends.
disagreement about/over/as to/on
disagreements about who will be allowed to vote
There were disagreements among doctors about the best way to treat the disease.
Connor's disagreements with school administrators
sharp/fundamental/profound etc disagreement (=serious disagreement)
be in disagreement (=disagree)
Scientists are in disagreement about the significance of the data.
differences between two statements, reports, numbers etc that ought to be similar [≠ agreement]
There is disagreement between these two estimates.