Breakdown/ˈbreɪkdaʊn/ Definition 1 of 4Pro Tip 1/3Unexpected events A breakdown often refers to sudden or unpredicted failures, not gradual ones. The printer's breakdown caught us off-guard during the project. Pro Tip 2/3Emergency situations The word 'breakdown' can imply a need for urgent action, like repairs. We need a mechanic for a breakdown now. Pro Tip 3/3Metaphorical use Breakdown can metaphorically describe the failure of plans or discussions. There was a breakdown in negotiations between the parties.