Words that Start with O
In English alphabets, the letter ‘O’ is the fourteenth letter. It is a commonly used letter in the English alphabet. The letter ‘O’ is also a vowel. It is the only letter that can complete a word and can change its meaning. Almost every word has the letter ‘O’ in it. The Phoenicians, a seafaring civilization, developed one of the earliest known writing systems, the Phoenician alphabet. The letter “O” likely evolved from a symbol representing an eye or a circular shape.
Table of Content
- List of Words that Start with O
- Words That Start With O to Describe Someone
- Words That Start With O (5 Letters)
- Words That Start With O for Kids
- Meaningful Words Starting With O
- Words That Start With O That Are Positive
- 25 Nouns That Start with O
- 25 Verbs That Start with O
- 25 Adjectives That Start with O
- 25 Words That Start with O for Everyday Communication
- Phrasal Verbs That Start with O
- Words with Double Os
List of Words that Start with O
Here’s a range of words that start with the letter ‘O’.
| Word Length | Words |
|---|---|
| 2 letter words that start with O | Oh, On, Oo, Or |
| 3 letter words that start with O | Oak, Ode, Oil, Old, One |
| 4 letter words that start with O | Oath, Open, Ouch, Oven, Odor |
| 5 letter words that start with O | Oasis, Ocean, Offer, Often, Onion, Order, Organ, Oaken, Opine, Orbit, Outer, Owned, Owner, Ozone, Oxide |
| 6 letter words that start with O | Object, Option, Outfit, Oafish, Oakums, Obeahs, Obduce, Oaring, Oakers, Occamy, Occult, Occurs, Occupy |
| 7 letter words that start with O | October, Octopus, Offerer, Opposed, Oakiest, Oakleaf, Oarages, Oarfish, Oblates, Obliged, Occiput, Ochered, Ocelots, Observe, Oddsman |
| 8 letter words that start with O | Occasion, Ordinary, Oafishly, Oarlocks, Oatmeals, Obduracy, Obdurate, Obedient, Oatcakes, Obliques, Obliquid, Observer, Obstacle, Obsolete |
| 9 letter words that start with O | Obviously, Opportunity, Orchestra, Oakmosses, Oarfishes, Obbligati, Obcordate, Obcuneate, Observers, Observing, Observant, Obstacles, Occasions, Occulters |
| 10 letter words that start with O | Octahedral, Obventions, Obversions, Occupating, Oceanfront, Octonarian, Oedematous, Officering, Offensives, Offendress, Offseasons, Oleographs, Obtusities, Occultness, Octachords |
Words That Start With O to Describe Someone
- Optimistic: Always hopeful and confident about the future.
- Outgoing: Sociable and eager to meet and talk to other people.
- Obliging: Ready to help; accommodating or willing to assist.
- Observant: Quick to notice or perceive things; paying close attention to details.
- Opinionated: Holding strong beliefs or judgments about something.
Words That Start With O (5 Letters)
- Oasis: A fertile spot in a desert where water is found.
- Ocean: A large body of salt water that covers most of the Earth’s surface.
- Overt: Not secret or hidden; openly displayed.
- Oxide: A chemical compound that contains at least one oxygen atom.
- Odder: More strange or unusual.
Words That Start With O for Kids
- Owl: A nocturnal bird of prey with large eyes and a flat face.
- Otter: A playful aquatic mammal known for its intelligence.
- Ocean: A vast body of salt water that covers about 70% of the Earth’s surface.
- Orange: A citrus fruit or its color, which is a mix of red and yellow.
- Octopus: A sea creature with a soft body and eight long arms.
Meaningful Words Starting With O
- Oasis: A place of peace, safety, or happiness in the midst of trouble or difficulty.
- Optimism: The hopefulness and confidence about the future or the successful outcome of something.
- Oratory: The art or practice of formal speaking in public.
- Omnipotent: Having unlimited power; able to do anything.
- Opulence: Great wealth or luxuriousness.
Words That Start With O That Are Positive
- Outstanding: Exceptionally good or impressive.
- Opportunistic: Using situations to gain immediate advantage rather than being guided by consistent principles or plans.
- Original: Fresh and unusual; presenting something new or offering a new perspective.
- Obedient: Complying or willing to comply with orders or requests.
- Overjoyed: Extremely happy or joyful.
25 Nouns That Start with O
- Ox
- Oak
- Oar
- Oath
- Oven
- Owner
- Otter
- Owl
- Object
- Oats
- Orbit
- Office
- Oasis
- Ocean
- Onion
- Opening
- Operation
- Occurrence
- Objection
- Obituary
- Obedience
- Obstruction
- Objectivity
- Obligation
- Open-mindedness
25 Verbs That Start with O
- Own
- Oil
- Open
- Oppose
- Occupy
- Offer
- Oblige
- Operate
- Obstruct
- Overdo
- Organise
- Orient
- Orate
- Obtain
- Originate
- Occur
- Outweigh
- Order
- Outshine
- Ordain
- Orbit
- Overhear
- Objectify
- Oscillate
- Orchestrate
25 Adjectives That Start with O
- Odd
- Open
- Old
- Oily
- Opal
- Overt
- Obtuse
- Obsessive
- Opposite
- Occidental
- Operational
- Objective
- Obdurate
- Obedient
- Obliged
- Obscure
- Opulent
- Optional
- Ostentatious
- Observant
- Obtrusive
- Opinionated
- Occasional
- Outstanding
- Ornamental
25 Words That Start with O for Everyday Communication
- On
- Off
- Out
- Oil
- Over
- Odour
- Other
- Onset
- Offset
- Offline
- Online
- Opinion
- Observe
- Occupation
- Ought to
- Offshore
- Outside
- Opposition
- Outstanding
- Occasion
- Orchestra
- Offering
- Outer
- Obstacle
- Obsolete
Phrasal Verbs That Start with O
- Opt out
- Open up
- Opt in
- Overlap with
- Own up to
- Order around
- Overreact to
- Operate on
Words with Double Os
- Soon
- Food
- Goose
- Foot
- Tooth
- Shoot
- Hoot
- Toot
- Hoop
- Coop
- Loot
- Root
- Boot
- Moot
- Too
The reference of words is taken from the Merriam-Webster Dictionary.
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