| 145017 | Moere | kuru | | | Z'graggen (1980) | night |
| 19398 | Emem | kumur | | | Voorhoeve (1975) | |
| 182028 | Male | kuluigen | | | Z'graggen (1980) | night |
| 182026 | Jilim | kulub | | | Z'graggen (1980) | night |
| 182025 | Rerau | kulu | | | Z'graggen (1980) | night |
| 164842 | Kyaka | kukwa | | | Davies and Comrie (1985) | night |
| 164851 | Enga (Sari Dialect) | kukuma | | | Davies and Comrie (1985) | night |
| 164844 | Enga (Lapalama Dialect) | kukuma | | | Davies and Comrie (1985) | night |
| 164845 | Enga (Lapalama Dialect) | kukuma | | | Davies and Comrie (1985) | night |
| 77194 | Enga | kúkua | | | Lang (1973) | |
| 164843 | Enga (Laiagam Dialect) | kuku | | | Davies and Comrie (1985) | night |
| 77191 | Enga | kuká | | | Lang (1973) | |
| 164852 | Enga (Wapi Dialect) | kuka | | | Davies and Comrie (1985) | night |
| 218441 | Tauade | kuᵛitda'ma | kwitda'ma | | SIL (1980) | |
| 182015 | Ganglau | kudum | | | Z'graggen (1980) | night |
| 52524 | Proto-Coastal-Binandere | *kubi | | | Smallhorn (2011) | |
| 52529 | Yegha (Korafe Dialect) | kubi | pitch darkness; clearing of skies after rainstorm | | Smallhorn (2011) | |
| 52528 | Gaina (Karoto Dialect) | kubi | black | | Smallhorn (2011) | |
| 21131 | Mombum | kuber | | | Voorhoeve (1975) | |
| 195746 | Kalam | kslm | | | Pawley (2013) | |
| 195745 | Kalam | ksim | | | Pawley (2013) | |
| 26968 | Yali, Angguruk | kʋpmʋ | | | Bromley (1967) | |
| 26326 | Dani, Lower Grand Valley (Hitigima Dialect) | kʋpakko | | | Bromley (1967) | |
| 26501 | Dani, Lower Grand Valley (Tangma Dialect) | kʋpakko | | | Bromley (1967) | |
| 26908 | Silimo | kʋpaka | | | Bromley (1967) | |
| 76038 | Fataluku | kounu | | | Fataluku Language Project | |
| 25755 | Mawes | kotrau | | | Voorhoeve (1975) | |
| 182003 | Sinsauru | kotiʌb | | | Z'graggen (1980) | night |
| 23343 | Foau | korujo | | | Voorhoeve (1975) | |
| 22817 | Mander | korin | | | Voorhoeve (1975) | |
| 19761 | Kimaghima | koo | | | Voorhoeve (1975) | |
| 259 | Mena | kʌꝑo·n(u) | | | Franklin (1973) | |
| 182030 | Sam | koʔlui | | | Z'graggen (1980) | night |
| 234325 | Alekano (Wanima Dialect) | kólugúq | | | SIL (1962) | |
| 215222 | Sam (Buan Dialect) | koluʔ | | | Rueck & Jore (2003) | |
| 215372 | Sam (Wongbe Dialect) | kolu | | | Rueck & Jore (2003) | |
| 215096 | Sam (Songum Dialect) | kolu | | | Rueck & Jore (2003) | |
| 208961 | Proto-Croisilles | *ko(k)lu(i) | | | Ross (2014) | night |
| 207565 | Proto-South-Adelbert | *ko(k)lu(i) | | | Ross (2014) | night |
| 208521 | Proto-Rai-Coast | *ko(k)lu(i) | | | Ross (2014) | night |
| 194063 | Sileibi | kʉnzʉndi | | | Z'graggen (1980) | night |
| 182029 | Bongu | kʌlu | | | Z'graggen (1980) | night |
| 216735 | Kaure | kling | | | Clouse (1997) | |
| 216724 | Kirikiri | kla-ɣo | | | Clouse (1997) | |
| 224127 | Bine (Irupi Dialect) | kiye | | | Fleischmann and Turpeinen (1976) | |
| 225359 | Bine (Drageli Dialect) | kiye | | | Fleischmann and Turpeinen (1976) | |
| 225512 | Bine (Sogal Dialect) | kiye | | | Fleischmann and Turpeinen (1976) | |
| 194080 | Faita | kiwur | | | Z'graggen (1980) | night |
| 207135 | Proto-Trans-New-Guinea | *k(i,u)tuma | | | Ross (2014) | night |
| 184746 | Proto-Trans-New-Guinea | *k(i,u)tuma | | | Pawley (2005) | |
