| Answer | Crossword Clue |
|---|---|
| REV | Increase motor speed |
| REV | Increase motor speed, briefly |
| revving | to increase the speed of (a motor) |
| revved | to increase the speed of (a motor) |
| rev | to increase the speed of (a motor) |
| revs | to increase the speed of (a motor) |
| soup | to improve the capacity for speed or increase the efficiency of (a motor or engine) by increasing the richness of the fuel mixture or the efficiency of the fuel, or by adjusting the engine |
