There are 19 6-letter words that start with 'mat'.
| maters | mateys | matier | mating | matins | 
| matres | matrix | matron | matsah | matted | 
| matter | mattes | mattin | mature | matzah | 
| matzas | matzoh | matzos | matzot | |
Note: These 19 6-letter words that start with 'mat' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with mate, matr, matc, matt, matu, math, mati, matz, mats, mata, matl.
4-letter words start with 'mat' (4)