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