There are 17 words that start with 'invali'.
| invalid | invalids |
| invalided | invalidly |
| invalidate | invaliding |
| invalidism | invalidity |
| invalidated | invalidates |
| invalidator | invalidisms |
| invalidating | invalidation |
| invalidators | invalidities |
| invalidations | |
Note: These 17 words that start with 'invali' are found from the USA & Canada version of the tournament Scrabble word list.