1. failures of a machine, vehicle, or system to work properly
2. collapses of physical or mental health
3. failures of relationships, negotiations, or communications

Examples

• The highway was blocked due to multiple car breakdowns.
• She suffered several emotional breakdowns after the divorce.
• The peace talks ended in complete breakdowns between the two sides.
• The report included detailed breakdowns of the company’s expenses.
• Mechanical breakdowns are common in older vehicles.
• The breakdown of communication led to the project’s failure.
• We need cost breakdowns for each department.