Dangerously or extremely fast: he drove at breakneck speed
More example sentences
- Breathlessly we run faster and faster at a breakneck speed to a destination we neither know nor can ever reach.
- It's both breakneck fast and much funnier than you would think.
- The players had been aware that this could pose the biggest test to the top-of-the-table status and came out of the blocks at breakneck speed.
dangerously fast, reckless, dangerous, excessive, precipitate, headlong
dangerously fast, at full speed, at full tilt, at full pelt, flat out, as fast as one's legs can carry one;
Frenchventre à terre
informal hell for leather, at a lick, like the wind, like a bat out of hell, like a bomb, like greased lightning