There are 295 10-letter words that start with 'ma'.
Note: These 295 10-letter words that start with 'ma' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with mar, man, mal, mas, mat, mac, mag, mai, mad, mam, may, max, mau, mah, mak, maz, maj, maf, map, mae, mav, maq, maw, maa, mab.
3-letter words start with 'ma' (12)