| 119356 | Yoidik | iasi- busak | | | Z'graggen (1980) | sibling os + |
| 138934 | Yarawata | emenike wamete | | | Z'graggen (1980) | older cross-sibling |
| 175894 | Yangulam | maŋanam gem | | | Z'graggen (1980) | sibling-different-sex-older |
| 175881 | Yabong | nig- | | | Z'graggen (1980) | sibling-different-sex-older |
| 138932 | Yaben | umayem | | | Z'graggen (1980) | 3 older cross-sibling |
| 138933 | Yaben | baiñami | | | Z'graggen (1980) | older cross-sibling |
| 175891 | Waube | imamuko | | | Z'graggen (1980) | sibling-different-sex-older |
| 175875 | Watiwa | wɛnᵱ n | | | Z'graggen (1980) | sibling-different-sex-older |
| 138912 | Waskia | koras | | | Z'graggen (1980) | older cross-sibling |
| 138927 | Wanambre | -BB:SRP | | | Z'graggen (1980) | older cross-sibling |
| 119376 | Wamas | kabin- | | | Z'graggen (1980) | sibling os |
| 119348 | Wamas | kaƀin | | | Z'graggen (1980) | sibling os + |
| 119367 | Wagi | apʌ- | | | Z'graggen (1980) | sibling os + |
| 190587 | Wadaginam | niwundiŋk | | | Z'graggen (1980) | (os sibling older) |
| 190588 | Wadaginam | -kaniwundiŋk | | | Z'graggen (1980) | (os sibling older) |
| 175890 | Uyajitaya | ugo | | | Z'graggen (1980) | sibling-different-sex-older |
| 175888 | Uya | uge- | | | Z'graggen (1980) | sibling-different-sex-older |
| 119360 | Utu | apa- | | | Z'graggen (1980) | sibling os + |
| 119361 | Utu | totu- | | | Z'graggen (1980) | sibling os + |
| 190582 | Utarmbung | -mumu | | | Z'graggen (1980) | (os sibling older) |
| 190583 | Utarmbung | -gar̃ma | | | Z'graggen (1980) | (os sibling older) |
| 138931 | Usan | baimɛnt | | | Z'graggen (1980) | older cross-sibling |
| 138930 | Usan | umemend | | | Z'graggen (1980) | 3 older cross-sibling |
| 175886 | Urigina | mamɔŋgo | | | Z'graggen (1980) | sibling-different-sex-older |
| 138940 | Ukuriguma | nɜmanika | | | Z'graggen (1980) | older cross-sibling |
| 138939 | Ukuriguma | eminak(a) | | | Z'graggen (1980) | (older cross-sex sib) |
| 138938 | Ukuriguma | umanaka | | | Z'graggen (1980) | 3 older cross-sibling |
| 257418 | Uare | eˈʒehe | | | Dutton (1970) | "sibling, opp.sex, older" |
| 190599 | Tauya | waʔnanono | | | Z'graggen (1980) | (os sibling older) |
| 175885 | Sumau | uku- | | | Z'graggen (1980) | sibling-different-sex-older |
| 175884 | Sop | ugi- ʌsʌu | | | Z'graggen (1980) | sibling-different-sex-older |
| 175878 | Siroi | kulim | | | Z'graggen (1980) | sibling-different-sex-older |
| 175871 | Sinsauru | nagi | | | Z'graggen (1980) | sibling-different-sex-older |
| 119359 | Silopi | totu- | | | Z'graggen (1980) | sibling os + |
| 190580 | Sileibi | arma | | | Z'graggen (1980) | (os sibling older) |
| 119370 | Sihan | ebi(na)- | | | Z'graggen (1980) | sibling os |
| 119341 | Sihan | ɛbi(na) | | | Z'graggen (1980) | sibling os + |
| 175873 | Sausi | naki | | | Z'graggen (1980) | sibling-different-sex-older |
| 119352 | Saruga | sotu- ɛmɛ | | | Z'graggen (1980) | sibling os + |
| 119349 | Samosa | sina | | | Z'graggen (1980) | sibling os + |
| 119350 | Samosa | pʌva | | | Z'graggen (1980) | sibling os + |
| 175899 | Sam | mana | | | Z'graggen (1980) | sibling-different-sex-older |
| 175883 | Saep | neg- buko | | | Z'graggen (1980) | sibling-different-sex-older |
| 175892 | Rerau | awaŋ | | | Z'graggen (1980) | sibling-different-sex-older |
| 119357 | Rempi | ʌ:si- | | | Z'graggen (1980) | sibling os + |
| 119347 | Rapting | awina | | | Z'graggen (1980) | sibling os + |
| 119375 | Rapting | awina- | | | Z'graggen (1980) | sibling os |
| 175880 | Pulabu | koŋgo | | | Z'graggen (1980) | sibling-different-sex-older |
| 208182 | Proto-South-Adelbert | *naŋgi- | | | Ross (2014) | older o.s. sibling |
| 207605 | Proto-South-Adelbert | *uŋgi- | | | Ross (2014) | older o.s. sibling |
