There are 12 words that start with 'incurv'.
| incurve | incurved | incurves |
| incurvate | incurving | incurvated |
| incurvates | incurvating | incurvation |
| incurvature | incurvations | incurvatures |
Note: These 12 words that start with 'incurv' are found from the USA & Canada version of the tournament Scrabble word list.