There are 12 words that start with 'reinj'.
| reinject | reinjure | reinjury | 
| reinjects | reinjured | reinjures | 
| reinjected | reinjuries | reinjuring | 
| reinjecting | reinjection | reinjections | 
Note: These 12 words that start with 'reinj' are found from the USA & Canada version of the tournament Scrabble word list.