disagreement
n.-
1 an argument (n.) B1 Intermediatean argument or a situation where people do not agree on a topic.
a specific instance of conflict or debate between parties. Countable in this sense.
ExampleThe two friends had a small disagreement about which movie to watch.
ExampleThe board members had a sharp disagreement over the proposed budget cuts, leading to a three-hour debate.
PitfallThey had a disagreement about the price.They had a disagreement over the price.While 'about' is common, 'over' or 'on' are often preferred when discussing the specific topic of a dispute.
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2 the state of not agreeing (n.) B2 Upper Intermediatethe state of having a different opinion from someone else.
the abstract condition of variance or lack of consensus. Often uncountable in this sense.
ExampleThere is still some disagreement among experts regarding the cause of the problem.
ExampleWidespread disagreement persists within the scientific community concerning the long-term ecological impact of the new dam project.
From dis- + agreement or disagree + -ment.