There are 7 13-letter words that start with 'gro'.
| grossularites | grotesqueness |
| grotesqueries | grouchinesses |
| groundbreaker | groundskeeper |
| growthinesses | |
Note: These 7 13-letter words that start with 'gro' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with grou, grow, gros, groo, grot, grov, grog, groa, grop, grom, groc, groi, grok, grod, groy.
4-letter words start with 'gro' (4)