Page 1: opposition, observation, occupation, overcomable, operation, Oceania, operations, oblivious, occasionally, overeating, occipitalis, obligation, opprobrious, ostentation, ordination, outpouring, opalescence, oscillometer, overpowering, oscillation, originality, obsolescence, Ordovician, omnipresence, optionality, orangeade, oenophile, oscitation, overlooked, ornithologist, omnipotence, oneirology, ouguiya, outhouse, oxidation, omnivorous, oubliette, overheating, Oregonian, osculation, outstation, officiating, overseeing, occultation, oscilloscope, overweening, openhandedness, ovulation, overeager, and omniscience
| Word | Length | Vowels | Syllables | |||
|---|---|---|---|---|---|---|
| Opposition | 10 | 5 | 5 | 4 | Old French | |
| Observation | 11 | 6 | 5 | 4 | Latin | |
| Occupation | 10 | 5 | 5 | 4 | Middle English | |
| Overcomable | 11 | 6 | 5 | 5 | ||
| Operation | 9 | 4 | 5 | 4 | Latin | |
| Oceania | 7 | 2 | 5 | 4 | French | |
| Operations | 10 | 5 | 5 | 4 | ||
| Oblivious | 9 | 4 | 5 | 4 | Latin | |
| Occasionally | 12 | 7 | 5 | 5 | ||
| Overeating | 10 | 5 | 5 | 4 | ||
| Occipitalis | 11 | 6 | 5 | 5 | ||
| Obligation | 10 | 5 | 5 | 4 | Proto Indo European | |
| Opprobrious | 11 | 6 | 5 | 4 | ||
| Ostentation | 11 | 6 | 5 | 4 | Middle English | |
| Ordination | 10 | 5 | 5 | 4 | ||
| Outpouring | 10 | 5 | 5 | 3 | ||
| Opalescence | 11 | 6 | 5 | 4 | ||
| Oscillometer | 12 | 7 | 5 | 5 | ||
| Overpowering | 12 | 7 | 5 | 5 | ||
| Oscillation | 11 | 6 | 5 | 4 | ||
| Originality | 11 | 6 | 5 | 6 | ||
| Obsolescence | 12 | 7 | 5 | 4 | Latin | |
| Ordovician | 10 | 5 | 5 | 5 | ||
| Omnipresence | 12 | 7 | 5 | 4 | ||
| Optionality | 11 | 6 | 5 | 5 | ||
| Orangeade | 9 | 4 | 5 | 3 | ||
| Oenophile | 9 | 4 | 5 | 3 | Ancient Greek | |
| Oscitation | 10 | 5 | 5 | 4 | Latin | |
| Overlooked | 10 | 5 | 5 | 3 | ||
| Ornithologist | 13 | 8 | 5 | 5 | ||
| Omnipotence | 11 | 6 | 5 | 4 | ||
| Oneirology | 10 | 5 | 5 | 5 | Latin | |
| Ouguiya | 7 | 2 | 5 | 2 | Arabic | |
| Outhouse | 8 | 3 | 5 | 2 | ||
| Oxidation | 9 | 4 | 5 | 4 | ||
| Omnivorous | 10 | 5 | 5 | 4 | ||
| Oubliette | 9 | 4 | 5 | 4 | French | |
| Overheating | 11 | 6 | 5 | 4 | ||
| Oregonian | 9 | 4 | 5 | 5 | ||
| Osculation | 10 | 5 | 5 | 4 | Latin | |
| Outstation | 10 | 5 | 5 | 3 | ||
| Officiating | 11 | 6 | 5 | 5 | ||
| Overseeing | 10 | 5 | 5 | 5 | ||
| Occultation | 11 | 6 | 5 | 4 | ||
| Oscilloscope | 12 | 7 | 5 | 4 | ||
| Overweening | 11 | 6 | 5 | 4 | ||
| Openhandedness | 14 | 9 | 5 | 5 | ||
| Ovulation | 9 | 4 | 5 | 4 | ||
| Overeager | 9 | 4 | 5 | 4 | ||
| Omniscience | 11 | 6 | 5 | 4 | Medieval Latin |
Prefix: o-. List of words that begin like o / start with o.
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