Breakneck/ˈbreɪknek/ Definition 1 of 2Pro Tip 1/3Implies Danger Breakneck suggests a speed so fast it could cause harm or danger. He took the corners at breakneck speed, ignoring the risk of an accident. Pro Tip 2/3Not Literal Used figuratively to describe very fast actions, not literally breaking one's neck. The news spread at breakneck speed across the internet. Pro Tip 3/3Urgency or Rush Often used to convey a sense of urgency or the need to act quickly. The team worked at breakneck pace to meet the deadline.