| oak (n) | igi apádò, igi óàkù |
| oar (n) | àjẹ̀, òbèlè |
| occasion (n) | àyè, ọ́nà, ìdí |
| occasionally (adv) | lẹ́ẹ̀kọkan, láìṣègbàgbogbo, nìlàrenílàre |
| occupation (n) | iṣẹ́, ìní, ìdawọ́bò, ìbùdó |
| occupy (v) | gbé, ṣiṣẹ́, gba ipò, dawọ́bò, bùdó |
| occur (v) | ṣẹ̀, ṣẹlẹ̀, hàn |
| occurence (n) (event) | ìṣẹlẹ̀ |
| ocean (n) | òkun nlà, agbami òkun |
| October (n) | oṣù kẹwàá ọdún |
| odor (n) | òórùn, okiki |
| off (adv) (light) | pa |
| offense (n) | ẹ̀ṣẹ̀ |
| offer (n) | ẹbọ, ìfilọ̀ |
| offer (v) | fí-fún, fi-lọ̀, rúbọ |
| office (n) | iṣẹ́, ibi iṣẹ́, ipò iṣẹ́, oyè |
| officer (n) (military) | ọ̀gágun |
| official (adj) | lábẹ́ àṣẹ, nípa agbára, oyè |
| official (n) | oníṣẹ́ |
| oil (n) | epo, òróró, ọ̀rá |