| Oblongum | oblong |
| Oblong | oblong |
| Polonium | polonium |
| Obligo | commitment |
| Obliquus | oblique case |
| obliegen | be somebody's responsibility apply oneself to a task |
| obligat | obligatory inevitable |
| Blond | blond |
| blond | blond fair fair-haired |
| Blonder | blond |
| Blondin | blond |
| Blog | blog weblog |
| Blogger | blogger |
| Blonde | blond blonde |
| bloggen | blog |
| Allonge | allonge |
| Allonym | allonym |
| Klonus | clonus |
| Long | Chinese dragon |
| Longe | lungeing rein |