English word com- comes from one or a combination of Proto-Indo-European roots *kʷe-, *kʷo-, *ḱe, *ḱón, and later Proto-Indo-European *ḱóm (beside, near, by, with) and Latin cum (although, because, when, with)
| Dictionary entry | Language | Definition |
|---|---|---|
| *kʷe- | Proto-Indo-European (ine-pro) | |
| *kʷo- | Proto-Indo-European (ine-pro) | |
| *ḱe | Proto-Indo-European (ine-pro) | |
| *ḱón | Proto-Indo-European (ine-pro) | |
| *ḱóm | Proto-Indo-European (ine-pro) | Beside, near, by, with. |
| *kʷís | Proto-Indo-European (ine-pro) | Who, what (interrogative). Who, which, that (relative) Which, what. |
| *kom | Proto-Italic (itc-pro) | (with ablative) with, along, at. |
| *kʷis | Proto-Italic (itc-pro) | Who, what (interrogative). |
| cum | Latin (lat) | Although. Because. When With. |
| com | Latin (lat) | |
| com- | English (eng) | The form of con- used before b, m, and p. |