Page 4: onset, owing, opportunity, optimism, Orr, ombre, oration, oddball, oui, oneness, octagon, oka, overwhelming, Odin, opal, orangey, outrageous, overdose, oats, oast, Osiris, ounce, oxide, odyssey, orbital, organelle, omicron, onus, OSHA, Orlando, outfit, offering, osmosis, opponent, Odysseus, opus, operator, OED, overcome, Ottawa, OIS, obtuse, onanism, outlandish, orphanage, Oct, orchestra, opposition, opaque, and Olympics
| Word | Length | Vowels | Syllables | |||
|---|---|---|---|---|---|---|
| Onset | 5 | 3 | 2 | 2 | Old English | |
| Owing | 5 | 3 | 2 | 2 | ||
| Opportunity | 11 | 7 | 4 | 5 | ||
| Optimism | 8 | 5 | 3 | 4 | ||
| Orr | 3 | 2 | 1 | 1 | ||
| Ombre | 5 | 3 | 2 | 2 | French | |
| Oration | 7 | 3 | 4 | 3 | Latin | |
| Oddball | 7 | 5 | 2 | 2 | ||
| Oui | 3 | 0 | 3 | 2 | Old French | |
| Oneness | 7 | 4 | 3 | 3 | Middle English | |
| Octagon | 7 | 4 | 3 | 3 | Latin | |
| Oka | 3 | 1 | 2 | 2 | Italian | |
| Overwhelming | 12 | 8 | 4 | 4 | ||
| Odin | 4 | 2 | 2 | 2 | Old Norse | |
| Opal | 4 | 2 | 2 | 2 | French | |
| Orangey | 7 | 4 | 3 | 3 | ||
| Outrageous | 10 | 4 | 6 | 3 | Anglo Norman | |
| Overdose | 8 | 4 | 4 | 3 | English | |
| Oats | 4 | 2 | 2 | 1 | ||
| Oast | 4 | 2 | 2 | 1 | ||
| Osiris | 6 | 3 | 3 | 3 | Ancient Greek | |
| Ounce | 5 | 2 | 3 | 1 | Middle French | |
| Oxide | 5 | 2 | 3 | 2 | French | |
| Odyssey | 7 | 5 | 2 | 3 | ||
| Orbital | 7 | 4 | 3 | 3 | ||
| Organelle | 9 | 5 | 4 | 4 | ||
| Omicron | 7 | 4 | 3 | 3 | ||
| Onus | 4 | 2 | 2 | 2 | Latin | |
| OSHA | 4 | 2 | 2 | 2 | ||
| Orlando | 7 | 4 | 3 | 3 | ||
| Outfit | 6 | 3 | 3 | 2 | ||
| Offering | 8 | 5 | 3 | 3 | ||
| Osmosis | 7 | 4 | 3 | 3 | ||
| Opponent | 8 | 5 | 3 | 3 | Latin | |
| Odysseus | 8 | 5 | 3 | 3 | Ancient Greek | |
| Opus | 4 | 2 | 2 | 2 | Latin | |
| Operator | 8 | 4 | 4 | 4 | ||
| OED | 3 | 1 | 2 | 1 | ||
| Overcome | 8 | 4 | 4 | 3 | Middle English | |
| Ottawa | 6 | 3 | 3 | 3 | Ojibwe | |
| OIS | 3 | 1 | 2 | 1 | ||
| Obtuse | 6 | 3 | 3 | 2 | Latin | |
| Onanism | 7 | 4 | 3 | 4 | ||
| Outlandish | 10 | 6 | 4 | 3 | Old English | |
| Orphanage | 9 | 5 | 4 | 3 | ||
| Oct | 3 | 2 | 1 | 1 | ||
| Orchestra | 9 | 6 | 3 | 3 | Latin | |
| Opposition | 10 | 5 | 5 | 4 | Old French | |
| Opaque | 6 | 2 | 4 | 3 | Middle English | |
| Olympics | 8 | 6 | 2 | 3 |
Prefix: o-. List of words that begin like o / start with o.
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