Latin word utrum comes from Proto-Indo-European *kʷóm, Proto-Indo-European *-teros (Contrastive or oppositional adjectival suffix.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *kʷóm | Proto-Indo-European (ine-pro) | |
| *-teros | Proto-Indo-European (ine-pro) | Contrastive or oppositional adjectival suffix. |
| *kʷóteros | Proto-Indo-European (ine-pro) | Which of two. |
| *kʷoteros | Proto-Italic (itc-pro) | |
| uter | Latin (lat) | Both. Either, which (of two) Bag made of hide (inflated for flotation). Wine or water skin or bottle. |
| utrum | Latin (lat) | Whether. |