Bold and reckless
Firm in loyalty:
Involving risk; hazardous; dangerous
Without delay; quick; prompt
The definition of fleet is something that moves swiftly.
Rapid is defined as something that is fast or quick or that happens in a short time.
Acting or responding quickly; prompt; ready
At full speed or with great speed
Having a greater than normal incidence of accidents.
Find another word for breakneck. In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for breakneck, like: daredevil, fast, quick, reckless, risky, speedy, expeditious, fleet, rapid, swift and hell-for-leather.