| Hodie | Today |
| Homo | Man |
| Hora | Hour |
| Hortor | Encourage |
| Hortus | Garden |
| Hostis | Enemy |
| Humus | Ground |
| Iaceo | Lie |
| Iacio | Throw |
| Iam | Now |
| Ianua | Door |
| Ibi | There |
| Idem | The same |
| Igitur | Therefore |
| Ille | He |
| Imperator | Emperor |
| Imperium | Empire |
| Impero | Order |
| In | In |
| Incendo | Burn |
| Infelix | Unlucky |
| Ingens | Huge |
| Ingrediator | Having entered |
| Inquit | Said |
| Insula | Island |
| Intellego | Understand |
| Inter | Between |
| Interea | Meanwhile |
| Interficio | Kill |
| Intro | Enter |
| Invenio | Find |
| Ipse | Himself |
| Ira | Anger |
| Iratus | Angry |
| Is | This |
| Ita | In this way |
| Itaque | And (so) |