There are 16 words that start with 'rosi'.
| rosin | rosier | rosily |
| rosing | rosins | rosiny |
| rosiest | rosined | rosinol |
| rosiness | rosining | rosinols |
| rosinous | rosinweed | rosinesses |
| rosinweeds | ||
Note: These 16 words that start with 'rosi' are found from the USA & Canada version of the tournament Scrabble word list.