There are 11 words that start with 'mif'.
| miff | miffs |
| miffy | miffed |
| miffier | miffing |
| miffiest | miffiness |
| miffinesses | mifepristone |
| mifepristones | |
Note: These 11 words that start with 'mif' are found from the USA & Canada version of the tournament Scrabble word list.