There are 6 15-letter words that start with 'repr'.
| representations | representatives | 
| repristinations | reprivatization | 
| reproachfulness | reproducibility | 
Note: These 6 15-letter words that start with 'repr' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with repro, repre, repri.
5-letter words start with 'repr' (1)