There are 13 13-letter words that start with 'mat'.
| materfamilias | materialising |
| materialistic | materialities |
| materializers | materializing |
| mathematician | mathematizing |
| matriarchates | matriculating |
| matriculation | matrilineally |
| matrimonially | |
Note: These 13 13-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)