| Words | हिंदी | Synonym | Synonym | Synonym | Synonym | Synonym |
| Hang-Out | , | Haunt | ||||
| Obdurate | , | Stubborn | ||||
| Object | , | Thing | ||||
| Obligatory | , | Compulsory | ||||
| Oblique | , | Indirect | ||||
| Observant | आज्ञाकारी , ध्यान रखने वाला | bright | alive | advertent | vigilant | perceptive |
| Obsolete | , | Out Of Date | ||||
| Off-Season | , | Low Season | ||||
| Omnipotent | , | All-Powerful | ||||
| Organic | , | Biological | ||||
| Ornament | , | Decoration | ||||
| Orphic | रहस्यमय , मोहक | distant | cryptic | enigmatic | esoteric | humble |
| Ostentation | दिखावा , अकड़ | Pretension | Pretense | Pageantry | False front | Flaunting |
| Outside | , | External | ||||
| Overseas | , | Abroad | ||||
| To Bear On Sth. | , | To Affect | ||||
| To Bring Sth. On | , | To Cause | ||||
| To Hand Sth. Out | , | To Distribute | ||||
| To Operate | , | To Function | ||||
| To Overhaul | , | To Overtake | ||||
| To Overlook | , | To Miss | ||||
| To Oversee | , | To Supervise |
