| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Objectionable | 13 | 7 | 6 | 5 |
| Obnoxious | 9 | 4 | 5 | 4 |
| Obscene | 7 | 4 | 3 | 3 |
| Odious | 6 | 2 | 4 | 3 |
| Odorant | 7 | 4 | 3 | 3 |
| Odored | 6 | 3 | 3 | 2 |
| Odoriferous | 11 | 5 | 6 | 5 |
| Odorous | 7 | 3 | 4 | 3 |
| Offence | 7 | 4 | 3 | 2 |
| Offense | 7 | 4 | 3 | 3 |
| Offensive | 9 | 5 | 4 | 3 |
| Oily | 4 | 2 | 2 | 2 |
| Oleaginous | 10 | 4 | 6 | 4 |
| Olid | 4 | 2 | 2 | 2 |
| Ominous | 7 | 3 | 4 | 3 |
| Opprobrious | 11 | 6 | 5 | 4 |
| Ordurous | 8 | 4 | 4 | 3 |
| Outrageous | 10 | 4 | 6 | 3 |
| Overripe | 8 | 4 | 4 | 3 |
| Painful | 7 | 4 | 3 | 2 |
| Pathetic | 8 | 5 | 3 | 3 |
| Pathogenic | 10 | 6 | 4 | 4 |
| Peakedp | 7 | 4 | 3 | 2 |
| Peccable | 8 | 5 | 3 | 3 |
| Peccant | 7 | 5 | 2 | 2 |
| Pedestal | 8 | 5 | 3 | 3 |
| Perfumed | 8 | 5 | 3 | 2 |
| Pernicious | 10 | 5 | 5 | 3 |
| Perversive | 10 | 6 | 4 | 3 |
| Pesky | 5 | 4 | 1 | 2 |
| Pestering | 9 | 6 | 3 | 3 |
| Pestiferous | 11 | 6 | 5 | 4 |
| Petroleum | 9 | 5 | 4 | 3 |
| Pie Eyed | 8 | 4 | 4 | 2 |
| Pie Eyed | 8 | 4 | 4 | 2 |

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