Domaći
| opservatorij | observatory | |
| opservatorija | observatory | |
| opsesija | obsession | |
| opsežan | bulk | |
| opsežan | capacious | |
| opsežan | expansive | |
| opsežan | extensive | |
| opsežan | spacious | |
| opsežan | voluminous | |
| opsežni | extensive | |
| opsežno | comprehensive | |
| opsežno | largely | |
| opsežnost | amplitude | |
| opsežnost | comprehensiveness | |
| opsežnost | copiousness |
