/ˈdiːlˌbreɪkər/ – noun
Definition: Điều kiện quyết định việc thỏa thuận hoặc giao dịch không thể tiếp tục.
A more thorough explanation: something that cannot be accepted and, if not resolved, results in talks regarding an agreement, job, relationship, etc. ending
Example: For many shoppers, this could be a deal-breaker.