There are 10 words that start with 'matro'.
| matron | matrons | matronal | 
| matronly | matronize | matronized | 
| matronizes | matronymic | matronizing | 
| matronymics | ||
Note: These 10 words that start with 'matro' are found from the USA & Canada version of the tournament Scrabble word list.