There are 12 words that start with 'impai'.
| impair | impaint | impairs |
| impaints | impaired | impairer |
| impainted | impairers | impairing |
| impainting | impairment | impairments |
Note: These 12 words that start with 'impai' are found from the USA & Canada version of the tournament Scrabble word list.