| Umbra | umbra umber |
| Ambra | ambergris |
| Rumba | rumba |
| Umbau | alteration conversion altered section reorganization |
| Umbrer | Umbrian |
| Zumba | Zumba |
| Dobra | dobra |
| Kobra | cobra |
| Zebra | zebra |
| Humbert | Humbert |
| Lumb | cusk |
| Umbriel | Umbriel |
| Fumble | fumble |
| Humbug | balderdash buncombe claptrap drivel hokum humbug |
| Mumbai | Mumbai |
| Penumbra | penumbra |
| Umbrien | Umbria |
| Umbruch | upheaval make-up word wrap |
| tumb | dim naive slow stupid |
| Coimbra | Coimbra |