| Language | Family | Form for STRAIGHT | Gloss for STRAIGHT | Form for SMOOTH | Gloss for SMOOTH |
|---|---|---|---|---|---|
| Lower Sorbian | Indo-European | rowny | STRAIGHT | rowny | SMOOTH |
| Azerbaijani | Turkic | дүз | STRAIGHT | һамар, дүз | SMOOTH |
| Kumyk | Turkic | тюз, тувра | STRAIGHT | тегиш, тюз | SMOOTH |
| Nogai | Turkic | туьз, тувра, теше | STRAIGHT | тешс, туьз | SMOOTH |
| Avar (East Gergebil dialect) | Nakh-Daghestanian | битӀараб | STRAIGHT | битӀараб, битIа-бишараб | SMOOTH |
| Rutul | Nakh-Daghestanian | дуьзды | STRAIGHT | дуьзды | SMOOTH |
| Botlikh | Nakh-Daghestanian | битІи | STRAIGHT | битІи | SMOOTH |
| Godoberi | Nakh-Daghestanian | битІиссу, битІи | STRAIGHT | битІи(ссу) | SMOOTH |
| Q'eqchi' | Mayan | tiik | STRAIGHT | tiik | SMOOTH |
| Sakha | Turkic | könö | STRAIGHT | könö | SMOOTH |
| Rapa Nui | Austronesian | ti-tika | STRAIGHT | pororeko; ti-tika | SMOOTH |
| Selkup | Uralic | nur̃ḳɨlʸ | STRAIGHT | nur̃ḳɨlʸ | SMOOTH |
| Turkish | Turkic | d̪jz | SMOOTH | d̪jz | STRAIGHT |
| Sahu | North Halmahera | boloto | SMOOTH | boloto | STRAIGHT |
| Turkish | Turkic | düz | SMOOTH | düz | STRAIGHT |
| SouthAltai | Turkic | tüs | SMOOTH | tüs | STRAIGHT |
| South Altay | Turkic | ? tüs | SMOOTH | tüs | STRAIGHT |
| North Altay | Turkic | tüs | SMOOTH | tüs | STRAIGHT |
| NorthAltai | Turkic | tüs | SMOOTH | tüs | STRAIGHT |
| Tsimihety | Austronesian | mahitsy | STRAIGHT | mahitsy | SMOOTH |
CLICS⁴