Rzeczownik z ang. na O
- Orange
- Owl
- Oil
- Octopus
- Onion
- Oak
- Oven
- object
- office
- Olive
- Ostrich
- Order
- Ocean
- Orgasm
- Open
- October
- Oat
- one
- Oval
- Out
- Oyster
- Opera
- owen
- Ornament
- Orphan
- Other
- Oracle
- Owner
- Old
- Opium
- Opportunity
- Oman
- Over
- Outlet
- Oxygen
- Otter
- only
- Oatmeal
- Okey
- Opener
- Online
- officer
- okay
- Our
- Orchestra
- Odd
- Opening
- Orangutan
- Oral
- olive oil
- orca
- Orc
- opposite
- offer
- Oats
- Ocular
- Organization
- Oscar
- organ
- Opal
- Older
- olives
- Oreo
- obstacle
- Olivia
- Oak wood
- orange juice
- omen
- Okno
- Option
- ore
- operator
- Outside
- Ozone
- Obvious
- Optimist
- Ordinary
- ono
- Optitian
- Oculus
- old man
- Orb
- Oath
- Ornitology
- Ork
- omlette
- Oklahoma
- Ogre
- o'block
- obesity
- omega
- Obviously
- Ointment
- own
- Overthinking
- oh my god
- original
- Opinion
- Omlet
- organism
The words in the list Rzeczownik z ang. na O come from players of the word game City, Country, River.