| obliviös | forgetful |
| Obligo | commitment |
| Obliquus | oblique case |
| Olivia | Olivia |
| Olivin | olivine |
| deliriös | delirious |
| malitiös | malicious |
| deliziös | delicious |
| maliziös | malicious |
| offiziös | white lie |
| religiös | religious |
| Obligation | bond obligation |
| obliegen | be somebody's responsibility apply oneself to a task |
| obligat | obligatory inevitable |
| Blini | blin |
| Bolivien | Bolivia |
| Olive | olive |
| Olivenöl | olive oil |
| Oliver | Oliver |
| livide | envious |