| Word | O Synonym | % Correct |
|---|---|---|
| Egg | Ovum / Ova | 100%
|
| Ancient | Old | 93%
|
| Egg-Shaped | Oval | 92%
|
| Killer Whale | Orca | 91%
|
| Parentless Child | Orphan | 90%
|
| Fat | Obese | 89%
|
| Strange | Odd | 86%
|
| Smell | Odor / Odour | 86%
|
| Happen | Occur | 77%
|
| Ajar | Open | 77%
|
| Ω | Omega | 74%
|
| Exclude | Omit / Oust | 67%
|
| Speaker | Orator | 64%
|
| Pledge | Oath | 56%
|
| Heed | Obey | 50%
|
| Foreboding | Omen | 50%
|
| Sphere | Orb | 45%
|
| Criminal | Outlaw | 26%
|
| Cantankerous | Ornery | 20%
|
| Deceive | Outwit / Outmaneuver / Outfox / Outsmart | 7%
|