Many easy English words begin with the letter O, and many of them are just three letters long. Words like off, our, or out are simple and often appear in short sentences. These 3 letter words starting with o help learners get used to seeing short, common words and improve how they read and understand English text.
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Learning 3 letter words starting with o boosts early vocabulary and helps make reading and writing smoother.
List of 3 Letter Words Starting with O
| One | Out | Off | Our |
| Old | Oil | Opt | Ore |
| Odd | Ode | Orb | Oak |
| Oaf | Oat | Oar | Owl |
| Own | Ope | Oxy | Ooh |
| Oik | Oft | Oes | Ods |
| Ono | Oma | Oca | Ose |
| Ohm | Oho | Ope | Owt |
| Oof | Oba | Orc | Oxy |
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3 Letter Words Starting with O and Ending in A
- Oca
- Oda
- Opa
- Ora
- Oma
3 Letter Words Starting with O and Ending in D
- Odd
- Old
- Ord
- Owd
- Ond
3 Letter Words Starting with O and Ending in E
- Ode
- Ole
- One
- Ope
- Ore
3 Letter Words Starting with O and Ending in H
- Ooh
- Oth
- Och
- Oph
- Ogh
3 Letter Words Starting with O and Ending in K
- Oak
- Oik
- Ock
- Ook
- Ouk
3 Letter Words Starting with O and Ending in M
- Oom
- Oem
- Oim
- Osm
- Opm
3 Letter Words Starting with O and Ending in S
- Ohs
- Oos
- Ops
- Ous
- Ons
3 Letter Words Starting with O and Ending in T
- Oat
- Oft
- Out
- Opt
- Ort
3 Letter Words Starting with O and Ending in U
- Odu
- Oku
- Onu
- Otu
- Omu
3 Letter Words Starting with O and Ending in X
- Oux
- Oxo
- Oax
- Oix
- Onx
3 Letter Words Starting with O and Containing A
- Oaf
- Oak
- Oar
- Oat
- Opa
3 Letter Words Starting with O and Containing E
- One
- Ore
- Ope
- Ode
- Ole
3 Letter Words Starting with O and Containing I
- Oil
- Oik
- Oid
- Oin
- Oir
3 Letter Words Starting with O and Containing O
- Ooh
- Ook
- Oot
- Obo
- Ono
3 Letter Words Starting with O and Containing U
- Our
- Out
- Oup
- Odu
- Ous
3 Letter Words Starting with O and Double O
- Ooh
- Oop
- Oot
- Oon
- Oos
3 Letter Words Starting with O and Double L
- Oll
- Olt
- Oul
- Olm
- Ohl
Rare 3 Letter Words Starting with O
- Oaf (a clumsy or unintelligent person)
- Oho (an exclamation of surprise or triumph)
- Oik (a crude or unrefined person, British slang)
- Oka (a unit of weight formerly used in some countries)
- Ogy (a dialect word loosely related to fear or awe)
- Owt (slang for “anything,” chiefly Northern English)
- Oup (Scottish dialect meaning to help or assist)
- Oca (a South American root vegetable similar to potato)
- Ope (poetic/literary form of the word “open”)
- Osu (a martial arts greeting or expression of respect)
3-Letter O Words with Meanings and Sentence Examples
| Word | Meaning | Example Sentence |
|---|---|---|
| One | The number after zero | She has only one brother. |
| Out | Not inside; away from a place | He went out for a walk. |
| Off | Not on; removed or deactivated | Turn the lights off before you leave. |
| Our | Belonging to us | Our team won the game. |
| Old | Having lived a long time; aged | That house is very old. |
| Oil | A liquid used for cooking or fuel | The car needs more oil. |
| Opt | To choose or decide | I opted for the blue shirt. |
| Ore | Rock that contains metal | The miners found a rich ore deposit. |
| Odd | Strange or unusual | That’s an odd way to say hello. |
| Ode | A poem expressing praise | He wrote an ode to his favorite city. |
| Oaf | A clumsy or unintelligent person | Don’t be such an oaf—watch your step! |
| Oho | An exclamation of surprise or realization | Oho! So you’re the one who hid the gift! |
| Oik | A rude or low-class person (British slang) | He acted like a complete oik at the party. |
| Oka | A unit of weight (historical) | The trader measured flour in okas. |
| Ogy | A rare dialect word linked to fear or awe | He stood in ogy before the huge statue. |
| Owt | Anything (Northern English slang) | Have you got owt to eat? |
| Oup | Scottish dialect meaning to help | He’ll oup his neighbor with the harvest. |
| Oca | A South American root vegetable | We planted oca in the garden this year. |
| Ope | Poetic form of “open” | The flower did ope its petals at dawn. |
| Osu | A respectful martial arts greeting | The students bowed and said “Osu” to the sensei. |
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