| ostensiv | ostensive |
| extensiv | extensive |
| intensiv | intensive intense |
| offensiv | offensive |
| Ostende | Ostend |
| Osten | east |
| Osterei | Easter egg |
| Osteria | osteria |
| ostensibel | ostensible |
| ostentativ | ostentatious ostentation |
| Hortensie | hydrangea |
| Ottensee | Odense |
| Tensid | surfactant tenside |
| Utensil | utensil implement piece of equipment |
| Offensive | offensive |
| defensiv | defensive |
| Possessiv | possessive pronoun |
| possessiv | possessive |
| Ostasiat | East Asian |
| Ostinato | ostinato |