There are 18 words that start with 'mild'.
| mild | milds | milded | 
| milden | milder | mildew | 
| mildly | mildens | mildest | 
| mildews | mildewy | milding | 
| mildened | mildewed | mildness | 
| mildening | mildewing | mildnesses | 
Note: These 18 words that start with 'mild' are found from the USA & Canada version of the tournament Scrabble word list.