Latin word summum comes from Proto-Indo-European *eḱs, Latin *eks-uper, Proto-Indo-European *uperi, and later Latin superus (Being above.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *eḱs | Proto-Indo-European (ine-pro) | out of , out, out of |
| *eks-uper | Latin (lat) | |
| *uperi | Proto-Indo-European (ine-pro) | |
| super | Latin (lat) | Accusative [of measure] above, beyond, over, in addition to. Accusative [of place] above, beyond. Accusative [of place] above, on the top of, upon. |
| superus | Latin (lat) | Being above. |
| summum | Latin (lat) | Summit. Top. |