According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern M---P-A--. That is, nine letter words with 1st letter M and 5th letter P and 7th letter A. In alphabetical order, they are:
metaphase
metaplasm
misspeaks
monophagy
monophase
monoplane
moonphase
mossplant
mycophagy