50 Spanish Adjectives That Start With O
Here are 50 Spanish adjectives that start with the letter “O”:
| Spanish | English |
| Obediente | Obedient |
| Obligatorio | Obligatory |
| Obsoleto | Obsolete |
| Obvio | Obvious |
| Ocasional | Occasional |
| Ocupado | Busy |
| Odiado | Hated |
| Odioso | Hateful |
| Ofensivo | Offensive |
| Oficial | Official |
| Ojeroso | Baggy |
| Oleoso | Oily-eyed |
| Olvidado | Forgotten |
| Opaco | Opaque |
| Operativo | Operational |
| Opuesto | Opposite |
| Optimista | Optimistic |
| Orgulloso | Proud |
| Orientado | Oriented |
| Original | Original |
| Ornamental | Ornamental |
| Oscuro | Dark |
| Osado | Daring |
| Ostentoso | Ostentatious |
| Otoñal | Autumnal |
| Ovacionado | Applauded |
| Ovalado | Oval |
| Oxidado | Oxidized |
| Oyente | Listening/Attentive |
| Obediente | Obedient |
| Observador | Observant |
| Obstinado | Obstinate |
| Ocurrente | Witty |
| Ocupacional | Occupational |
| Oloroso | Aromatic |
| Olvidadizo | Forgetful |
| Omnipotente | Omnipotent |
| Ondulado | Wavy |
| Oneroso | Onerous |
| Onírico | Dreamlike |
| Opulento | Opulent |
| Orgánico | Organic |
| Orquestal | Orchestral |
| Ortodoxo | Orthodox |
| Oscilante | Oscillating |
| Osado | Daring |
| Otoñal | Autumnal |
| Ovino | Ovine |
| Oxidado | Oxidized |
| Oxigenado | Oxygenated |

Positive Spanish Adjectives That Start With O:
Here are positive Spanish adjectives that start with the letter “O”:
| Spanish | English |
| Oportuno/a | Opportune |
| Original | Original |
| Optimista | Optimistic |
| Ocurrente | Clever |
| Organizado/a | Organized |
| Objetivo/a | Objective |
| Osado/a | Daring |
| Obediente | Obedient |
| Ondulado/a | Wavy |
| Opulento/a | Opulent |
Negative Spanish Adjectives That Start With O:
Here are ten negative Spanish adjectives that start with the letter “O”:
| Spanish | English |
| Oscuro/a | Dark |
| Odioso/a | Hateful |
| Odiado/a | Hated |
| Ofensivo/a | Offensive |
| Obsceno/a | Obscene |
| Oneroso/a | Onerous, burdensome |
| Odiador/Odiadora | Hater |
| Oprobioso/a | Outrageous, disgraceful |
| Obstruccionista | Obstructionist |
| Oprimido/a | Oppressed |
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