There are 14 words that start with 'incap'.
| incapable | incapably |
| incapacity | incapability |
| incapacitate | incapacities |
| incapableness | incapacitated |
| incapacitates | incapabilities |
| incapacitating | incapacitation |
| incapablenesses | incapacitations |
Note: These 14 words that start with 'incap' are found from the USA & Canada version of the tournament Scrabble word list.