| 159359 | Madi | wai | | | McElhanon and Voorhoeve (1970) | rain |
| 257083 | Magɨ | aŋ | | | Daniels (2016) | |
| 143323 | Maia (Pila Dialect) | ŋat | | | Z'graggen (1980) | rain |
| 143322 | Maia (Pila Dialect) | erikip | | | Z'graggen (1980) | rain |
| 143324 | Maia (Saki Dialect) | ŋat | | | Z'graggen (1980) | rain |
| 86088 | Mailu (Asiaoro Dialect) | guba | | | Thomson (1975) | |
| 87458 | Mailu (Baibara Dialect) | guba | | | Thomson (1975) | |
| 86910 | Mailu (Borebo Dialect) | guba | | | Thomson (1975) | |
| 88280 | Mailu (Darava Dialect) | bailo | | | Thomson (1975) | |
| 88006 | Mailu (Delebai Dialect) | bailo | | | Thomson (1975) | |
| 87184 | Mailu (Domara Dialect) | bailo | | | Thomson (1975) | |
| 87732 | Mailu (Geagea Dialect) | bailo | | | Thomson (1975) | |
| 86362 | Mailu (Ilai Dialect) | bailo | | | Thomson (1975) | |
| 86636 | Mailu (Island Dialect) | guba | | | Thomson (1975) | |
| 217820 | Maiwa | uwin | Daga - ugin | | SIL (1967) | |
| 221236 | Maiwa | 'u·.ɩn | | | SIL (1973) | |
| 143321 | Mala | bebi | | | Z'graggen (1980) | rain |
| 143317 | Malas | timbi | | | Z'graggen (1980) | rain |
| 180370 | Male | wʌ | | | Z'graggen (1980) | rain |
| 159390 | Mamaa | wiiʔ | | | McElhanon and Voorhoeve (1970) | rain |
| 159395 | Ma Manda | gii | | | McElhanon and Voorhoeve (1970) | rain |
| 237338 | Manambu | war | | | Foley (2005) | |
| 159326 | Mandobo Atas | murup | | | McElhanon and Voorhoeve (1970) | rain |
| 201378 | Mandobo Atas | murüp | | | Voorhoeve (2000) | |
| 231367 | Mandobo Atas | murüp | | | Healey (1970) | |
| 231551 | Mandobo Atas (Kwem Dialect) | murüp | | | Healey (1970) | |
| 201459 | Mandobo Atas (Yonggom Dialect) | mirip | | | Voorhoeve (2000) | |
| 29512 | Manem | pu | rain | | Voorhoeve (1971) | rain |
| 261241 | Manep | timbi | | | Pick (2019) | rain |
| 90860 | Mape | kue | rain | | McElhanon (1967) | rain |
| 159425 | Mape (East Dialect) | kue | | | McElhanon and Voorhoeve (1970) | rain |
| 159423 | Mape (Naga Dialect) | koe | | | McElhanon and Voorhoeve (1970) | rain |
| 159424 | Mape (West Dialect) | kue | | | McElhanon and Voorhoeve (1970) | rain |
| 258073 | Maria (Maiagolo Dialect) | niˈa | | | Dutton (1970) | rain |
| 258072 | Maria (Maiagolo Dialect) | ˈʔou | | | Dutton (1970) | rain |
| 258075 | Maria (Maranomu Dialect) | ˈtou | | | Dutton (1970) | rain |
| 258077 | Maria (Uderi Dialect) | ˈmia | | | Dutton (1970) | rain |
| 258079 | Maria | ˈtouʔa | | | Dutton (1970) | rain |
| 159352 | Marind (Gawir Dialect) | hei | | | McElhanon and Voorhoeve (1970) | rain |
| 159351 | Marind (Gawir Dialect) | xe | | | McElhanon and Voorhoeve (1970) | rain |
| 124377 | Matepi | wʌ | | | Z'graggen (1980) | rain |
| 143326 | Mauwake | epia | | | Z'graggen (1980) | rain |
| 143330 | Mawak | sepik | | | Z'graggen (1980) | rain |
| 124375 | Mawan | gu | | | Z'graggen (1980) | rain |
| 243892 | Mehek | loko | | | Laycock (1968) | |
| 258 | Mena | kore | rain | | Franklin (1973) | rain |
| 243901 | Mende | ma | | | Laycock (1968) | |
| 4786 | Menya | piya | rain | | Lloyd (1973) | rain |
| 90854 | Mesem | ma | rain | | McElhanon (1967) | rain |
| 159416 | Mesem | ma | | | McElhanon and Voorhoeve (1970) | rain |
