| 209333 | Proto-Rai-Coast | *naŋgi- | | | Ross (2014) | older o.s. sibling |
| 208612 | Proto-Rai-Coast | *uŋgi- | | | Ross (2014) | older o.s. sibling |
| 209917 | Proto-North-Adelbert | *imənak | | | Ross (2014) | older cross-sibling |
| 207045 | Proto-North-Adelbert | *ememenda | | | Ross (2014) | older cross-sibling |
| 208420 | Proto-North-Adelbert | *gwarand | | | Ross (2014) | older cross-sibling |
| 207320 | Proto-North-Adelbert | *imənak | | | Ross (2014) | older cross-sex sib |
| 208520 | Proto-Maria | *ninaini | | | Ross (2014) | sib.x.s. older |
| 97122 | Proto-Kwalean | *eʒehe | | | Ross (2014) | sibling, opp. sex, older |
| 15564 | Proto-Koiariac | *tata | | | Dutton (2010) | |
| 208505 | Proto-Doromu | *tobaini | | | Ross (2014) | sib.x.s. older |
| 206712 | Proto-Croisilles | *uŋgi- | | | Ross (2014) | older o.s. sibling |
| 207393 | Proto-Croisilles | *naŋgi- | | | Ross (2014) | older o.s. sibling |
| 190595 | Paynamar | -amaŋ | | | Z'graggen (1980) | (os sibling older) |
| 138937 | Parawen | -minika | | | Z'graggen (1980) | older cross-sibling |
| 119374 | Panim | ebina- | | | Z'graggen (1980) | sibling os |
| 119346 | Panim | ɛbinʌ- matu | | | Z'graggen (1980) | sibling os + |
| 138925 | Pamosu | weip | | | Z'graggen (1980) | older cross-sibling |
| 138929 | Pal | masimi | | | Z'graggen (1980) | older cross-sibling |
| 175889 | Ogea | ogo- | | | Z'graggen (1980) | sibling-different-sex-older |
| 119382 | Nobonob | abina- | | | Z'graggen (1980) | sibling os |
| 119366 | Nobonob | abina- | | | Z'graggen (1980) | sibling os + |
| 190591 | Nend | aziŋ | | | Z'graggen (1980) | (os sibling older) |
| 119353 | Nake | avina- ɛmɛ | | | Z'graggen (1980) | sibling os + |
| 119378 | Nake | avina- | | | Z'graggen (1980) | sibling os |
| 138926 | Musar | bawem | | | Z'graggen (1980) | older cross-sibling |
| 190593 | Musak | nore | | | Z'graggen (1980) | (os sibling older) |
| 190594 | Musak | iʌkʌ | | | Z'graggen (1980) | (os sibling older) |
| 119351 | Murupi | awina- ɛmɛ | | | Z'graggen (1980) | sibling os + |
| 119377 | Murupi | awina- | | | Z'graggen (1980) | sibling os |
| 119338 | Munit | ɛƀia- | | | Z'graggen (1980) | sibling os + |
| 119368 | Munit | evia- | | | Z'graggen (1980) | sibling os |
| 190581 | Mum | -rma | | | Z'graggen (1980) | (os sibling older) |
| 257424 | Mulaha | iaukeba | | | Dutton (1970) | "sibling, opp.sex, older" |
| 257423 | Mulaha | iaukepa | | | Dutton (1970) | "sibling, opp.sex, older" |
| 15567 | Mountain Koiari | tata | sibling, opposite sex, older, elder sister | | Dutton (2010) | |
| 257422 | Motu | taihu- | | | Dutton (1970) | "sibling, opp.sex, older" |
| 119354 | Mosimo | kawini- | | | Z'graggen (1980) | sibling os + |
| 119379 | Mosimo | kawini- | | | Z'graggen (1980) | sibling os |
| 190586 | Moresada | -sekʌt | | | Z'graggen (1980) | (os sibling older) |
| 138921 | Moere | imnaʔ | | | Z'graggen (1980) | older cross-sibling |
| 175877 | Migum | nʌŋnʌ | | | Z'graggen (1980) | sibling-different-sex-older |
| 138917 | Miani | -imina | | | Z'graggen (1980) | older cross-sibling |
| 119362 | Mawan | ʌ:wi(na)- mɛ | | | Z'graggen (1980) | sibling os + |
| 119380 | Mawan | a:wi(na)- | | | Z'graggen (1980) | sibling os |
| 138923 | Mawak | sai karen | | | Z'graggen (1980) | older cross-sibling |
| 138924 | Mawak | ap heip | | | Z'graggen (1980) | older cross-sibling |
| 138918 | Mauwake | ekera | | | Z'graggen (1980) | older cross-sibling |
| 138919 | Mauwake | maneka | | | Z'graggen (1980) | older cross-sibling |
| 119364 | Matepi | dotu- | | | Z'graggen (1980) | sibling os + |
| 257420 | Maria | ˈninaˈini | | | Dutton (1970) | "sibling, opp.sex, older" |
