There are 19 words that start with 'regro'.
| regrow | regroom | regroup |
| regrown | regrows | regrooms |
| regroove | reground | regroups |
| regrowth | regroomed | regrooved |
| regrooves | regrouped | regrowing |
| regrowths | regrooming | regrooving |
| regrouping | ||
Note: These 19 words that start with 'regro' are found from the USA & Canada version of the tournament Scrabble word list.