There are 12 words that start with 'impul'.
| impulse | impulsed |
| impulses | impulsing |
| impulsion | impulsive |
| impulsions | impulsively |
| impulsivity | impulsiveness |
| impulsivities | impulsivenesses |
Note: These 12 words that start with 'impul' are found from the USA & Canada version of the tournament Scrabble word list.